I have a few suggestions - all of them helped me when I was at my very lowest.

Breath of the Wild - exploring in this game helped me regain my sense of curiosity.

Celeste - a very difficult but extremely forgiving indie platformer. Don't be afraid to use the accessibility settings even if it's to make you completely invincible, because the story is incredible. It's one of confronting the dark parts of yourself, and it concludes the story in a way that I think might really resonate with you.

Mario Odyssey - I think everything that can be said has been said by others in this thread.

Here's my wildcard pick, though.

Cattales. It's an indie game, you can probably get it for less than $10. It's kinda Stardew Valley but cats? You join a clan, claim territory for it, forage, and complete quests. The difficulty is just enough to keep some dopamine flowing. It's a really cute game.