Idk what I'm doing

Yk honestly don't know how I'm doing mentally and emotionally.. I mean like I flip flop between being happy, sad, ect but I just feel like I'm not fully there ig. I'm kinda lonely, exhausted, tired, and constantly overwhelmed by everything. I feel pathetic for it but I don't know how I'm doing... Uhhhgg maybe I should just call everything short,, I doubt that anyone would actually care I'm just tired. I'm worried about my life is going to crumble after highschool and probably college so what would be the problem if I ended things early. Idk