He doesn't care anymore

Do you know what his dating history has been like? Does he have a pattern of losing feelings in relationships when the woman is fully available to him? Does he have an avoidant attachment style? He may have realized the relationship isn’t for him, but if you’ve been together 2 years and he’s having this much difficulty communicating why he’s feeling this way, it’s probably him not you. Which doesn’t help in regards to you can’t fix it if he has the problem, but it’ll give you a better idea on whether or not things can be salvaged.

I have a feeling he has been cheating. Dig.

He sounds depressed and overwhelmed, between the pandemic and his parents splitting, and like he doesn’t have the right tools to deal with it. But just because he’s trying to figure himself out doesn’t mean you deserve for him to take it out on you. No one ever deserves to be told they’re a burden, and that in itself is enough reason for you to walk away. He’s handling the situation in a terrible and hurtful manner.

It is also possible that you’re both young, and this may be a natural end to a relationship that isn’t right for him so his feelings have dissipated. Your first relationship teaches you a lot both about what you do and don’t want, even if you can’t verbalize it. If this is the case rather than he is dealing with his mental health, letting go is also best.

In both scenarios, he is being honest with you that it’s him and not you. Nothing is wrong with you, you didn’t cause the issues, so you also can’t fix them. If you don’t want to leave, the only real course of action you have right now is honoring his request for space and focusing on yourself. If he truly wants to find a way to make this work with you, he probably needs to go to therapy, but you can’t convince him to do that. He has to want to do it for himself.

Focusing on yourself means doing things you enjoy, that make you feel happy and good about yourself, talking to or hanging out with other people you’re close to. Making sure you have ways to define yourself outside of him, and nurturing your support network outside of him also. Perhaps also creating a timeline in your head for what’s acceptable for you to see some progress in reconnecting in your relationship, and moving on if you haven’t heard from him by that point or things aren’t moving in that direction.

Something else to think about. You should absolutely be giving him space because he asked you for it — but not to “seem less available.” Romantic relationships are supposed to enhance your life, not diminish you. Feeling you need to walk on eggshells or not be your authentic self after 2 years is a bad sign. If you create a dynamic of playing games to stay with someone, that is how it will work indefinitely, so would you really want that kind of relationship for yourself? You also mentioned you were planning all the date activities. One person can’t shoulder all the responsibility of a two person romantic relationship. There’s a lot of ways he’s not been pulling his weight here, so don’t sell yourself short and take on all of the blame or responsibility.