Do things get better once you finish school?

Im 17 and I just feel like sh*t a lot of the time. I got social anxiety but am seeing a psychologist about it and I usually feel depressed, lonely, isolated abd not cared about by all my friends that I used to hang with. Im at my last year of school and I just want to know if things get better after your done with it. Any answers or personal experience would be great tghank you :).