Part of the problem with being depressed is that you can’t imagine that you could ever feel differently. Part of the problem with being young is that you haven’t yet seen how much things can change for the better over time. Depression makes you think that you’re worthless; it makes you think you can’t be with others because you can’t contribute anything positive. Unfortunately this means that depression feeds on itself: it isolates you, and the more isolated you become, the worse it gets.
Lots of people are giving you the same advice: go get counseling. I’m sure plenty of those posting here have been through a version of what you’re going through and have come out the other side. What you have tried to do to help yourself hasn’t worked; why not try following the advice here?