The issue isn't with Ash, it's with the League's subsequent handling. The League failed to capture Team Rocket's important high-level members promptly when it disbanded, leading to the situation where Team Rocket's upper echelons joined other organizations.
But you can't entirely blame the League; after all, they were short-handed, especially the Kanto League, which almost shares the Elite Four with Johto. Frankly speaking, the high-level combat power consists of only two members, Lorelei and Agatha.
The other two are both Kanto's and Johto's Champions and Elites. Overall, the two Leagues only have five Elites and one Champion — talking just in terms of responsibility.
In terms of actual strength, it might be around four Champions and two Elites, very strong in high-level combat power; however, they can't be in two places at once.
Handling Team Rocket's upper echelons could indeed have them intervene, but those Team Rocket leaders are hidden and don't come out. When Lance and others were entangled with Team Rocket's minor players, the League's spies discovered the whereabouts of Team Rocket's high-level members, but by then, it was too late for Lance and others to reach them.
The League's handling has significant problems, leading to such a poor situation. If Ash's way of doing things is considered problematic, then there would be no correct way in the world.
Justice is never wrong. If even justice itself is vetoed, will anyone in the world still do just things?
With Cynthia's comfort, Ash finally recovered somewhat from the psychological shock, but he doesn't believe the current situation has nothing to do with him.
No matter the original future where Team Rocket wasn't dealt with, the events have already occurred, and it can be said that his actions indirectly led to this, so he must take responsibility.
Without going too far, emotionally and rationally, he must heal Little Lugia. Little Lugia's life involves a series of things; particularly if the Sea God gets to know about this situation, the Sea God may not give the League a chance to explain.
This is also why the League wants to find the Sea God first; the situation would be completely different if they found the Sea God before the Sea God perceived Little Lugia's condition and came to them.
After discussing international events with Cynthia, Cynthia temporarily bid farewell to everyone. Because of Team Galactic, she also has many issues to handle on her side, and she agreed with them to return the next morning to help Ash treat Little Lugia.
After Cynthia left, Ash's smile faded a little. Misty noticed Ash's inner turmoil and reached out her small hand to pat Ash's shoulder, saying: "Don't think too much, Ash. Didn't Miss Cynthia say it? If it weren't for you, the situation would have been worse, and it's not your fault that things turned out this way."
'Both of you are right. If you think stopping Giovanni was wrong, then... was saving me also wrong?' Mewtwo, who had been quietly listening, suddenly spoke.
Although she felt a bit embarrassed saying the latter part, she still expressed her true feelings to prevent Ash from suffering unnecessary guilt.
Leaving aside the good or bad impacts on the League and world dynamics, saving her was indeed real. If she continued in Team Rocket, who knows how far she would have fallen?
To put it plainly, just her influence alone could outweigh the combined impacts of all evil organizations.
Those evil organizations are still in the stage of invading Kanto and Johto Regions, and the League would send people to stop them. This confrontation can still be termed a battle.
But had she advanced to Divine Domain Level and followed Giovanni in perpetrating evil, it wouldn't be a battle anymore; it would be a one-sided crush!
Without someone at Divine Domain Level to oppose them, all of Kanto would fall!
Moreover, for Ash, this isn't the most crucial point. The most important thing is to pull her out of the mire, which is what matters most to Ash. This is her understanding of Ash during their time together.
After hearing Mewtwo's comfort, Ash finally lifted his head, eyes sparkling with a certain light: "Thank you, Mewtwo, Misty, Brock, I've recovered. I'll go think about how to treat Little Lugia; I'll leave dinner to you guys."
The latter part of Ash's words was said to Misty and Brock. After a battle and a long conversation, it was unknowingly almost evening.
Ash needs to find a way to help Little Lugia recover, so cooking dinner has to be left to Brock and the others.
As for how Ash would find a method, it's Ash's own matter. If it's Ash, then he'll definitely figure it out; this is what Misty and the others believe.
Mewtwo watched Ash and Pikachu as they entered the room, her figure gradually disappearing.
Ash is trying his best, and she wouldn't just sit idle either. In terms of who currently has the best chance of finding the Sea God, it would naturally be her. She needs to make a trip to the Orange Archipelago!
...
Back in the room, Ash sat on the bed, instructed Pikachu not to disturb him, and then closed his eyes.
Pikachu tilted his head, not asking why Ash needed to be in the room to think but quietly lay beside Ash, closing his eyes and pretending to sleep.
Ash closed his eyes, intending to enter the chat group. Ever since the Quartz Conference started recently, his visits to the chat group have decreased.
On one hand, he's gradually growing and doesn't intend to rely permanently on the bigshots in the chat group. He's already set out on his own path, and what remains is to digest and absorb the knowledge taught by the bigshots, enabling him to become a complete Ash embodying the power of all parallel worlds' Ash.
However, today's battle made Ash realize he still falls short of being a top-notch Trainer and needs to keep learning.
Of course, he entered the chat group not to complain about how hard losing a match is but because of the situation with Little Lugia.
With Ash's shout, the various bigshots in the group popped up, and Ash shared Little Lugia's condition along with the background story in the group.
[Champion Ash: Didn't expect such a thing after Team Rocket's disbandment, but it's actually foreseeable; where there is light, there must be darkness. Even if Team Rocket disbands, other evil organizations will replace it. We had already mentioned this before; dismantling Team Rocket wasn't wrong, so you shouldn't worry about it.]
[Newbie Ash: Hmm, thank you for the comfort, bigshot. However, Mewtwo and Misty already consoled me, and I've moved past this matter. Now, I'm more concerned about how to resolve Little Lugia's condition. Has anyone in the group experienced similar situations?]
[Champion Ash: Oh? It's quite rare for that unrestrained Mewtwo to offer comfort, huh. Seems like the bond between you two has successfully formed... Regarding Little Lugia's situation, that guy should know a bit @Friend of the Divine Beasts Ash.]
[Friend of the Divine Beasts Ash: Hi hi~ I've reviewed the situation a bit; it's actually not a big deal. It's just that there's still Psychic Type power inside Little Lugia, and the Dark Attribute is a strong adversary of the Psychic Type. What you need to do is completely remove the Psychic Attribute power within Little Lugia, and Little Lugia's life safety can be assured.]
Friend of the Divine Beasts Ash... This is a bigshot Ash has never seen, and it's the first time seeing him appear in the chat group.
But since Champion Ash mentioned him, it indicates the reliability of the other party. Among the group, Ash feels Champion Ash is the most reliable.
The bigshots he introduces shouldn't be much different.
And the method mentioned by Friend of the Divine Beasts Ash doesn't seem too difficult. If removing the Psychic Attribute can save Little Lugia, then once his power recovers, this task would be just a flick of the fingers.
[Friend of the Divine Beasts Ash: However...]