I'm seriously contemplating suicide

I'm not even that depressed anymore, I am on antidepressants (sertraline fyi). It doesn't feel like it fixed anything or relieved me of that burden. It's like it killed off part of that darkness and just made me feel bored and empty. I sometimes have clarity and I can feel the negative thoughts creeping in. My life rn is esentially a bland meal with a side of despair. I've got nothing to live for and I know some people want me dead anyway. I'm a teen & legal minor so I don't get to decide anything about my treatment. I'm being kept in the dark despite it being about me. I hate everything about those people, the social workers, psychologists, psychiatrists, doctors. I don't want to go through all that. I know I am going to cause some people a lot of grief if I kill myself but there's no way I'm going to make it to 18 in one piece. I can't openly talk to my parents and the only person I do somewhat trust is a teacher who can't help much. I just can't do this anymore and I'm a worse person by the day. I get into fights, steal, smoke and get drunk more and more. I just can't fill that void from the antidepressants but my only other option is stop taking them somehow and go through hell on earth again. I feel like no matter what I do I'm dead either way. I don't know who to turn to or what tp do anymore. I need help.