Mental health advice.

Hey everyone sorry to bother but does anyone know any advice for anyone ‘struggling’ with mental health. To be honest I don’t even know why I am writing this I don’t think I am going through anything big or even should be writing this when many others struggle through so much more than me. It’s just that I really feel like life is a blur like I’m just going around and doing what I do but I don’t really feel awake during most of it like I’m just doing the routine. It’s just sometimes I don’t really feel things or even when I’m happy I don’t really enjoy myself just put a fake smile. And recently every day of school has been about me trying to make friends and shi like that but not even just that. Every single day I talk to everyone I know and try get ‘closer to them’ even if it means faking my attitude or anything. And at the end of the day I tally how close I got to some people versus how some people may like me less now and I can’t sleep thinking about if someone doesn’t like me as much now and what not and think about how I can get them to like me more or whatever and even if that means sucking up to them. Idk but other than that which I don’t think it’s a big deal it just doesn’t feel like I am living at all. And the mistakes I have made in the past which I can’t talk about here keep me up and night. And I’m having thoughts quite often recently which you can infer what they are. I just don’t know what to do anymore.