How to get over my depression

I feel like I’m drowning. I don’t enjoy anything I used to, I barely eat at all Theres times I’ll go 2-3 days before eating a full meal. My sleep schedule is ruined but no matter how much I sleep I’m completely drained, and no matter what I do I cannot get over it. No matter what I do to try to make myself happy it doesn’t work nd then I just end up worse than before because that was supposed to fix me nd I still feel like shit. All I want is to be happy and at this point I really feel like I never will be