Hello there
been depressed and suicidal is the absolute worst! I am 34 years old I don't know how old you are but I believe you said your adolescence has been bad so I'm guessing you're in your late teens maybe early 20s now? Anyway, you mentioned you've tried everything but have you tried filling your void with spiritually?
To be honest I haven't tried therapy or antidepressants, I don't think I have clinical depression though I believe I have situational depression, meaning I feel depressed, hopeless and suicidal because of some issues I'm enduring at the time of which it's been some years but I am aware of the exact issues that make me depressed. I recently started reading the Bible and it has helped me grow spiritually, it's given me relief to fully believe a higher power loves me and that while our mortal lives go through pain and suffering so do the rest of the living species. It's after death that our souls find eternal peace, it may sound crazy for those who don't believe but crazier things roam our heads when we're depressed like seriously I do not know where you're all from but I'm in the United States and I feel lucky because I know there's millions of people living in third world counties ruled by crime terrorists or are total war zones. I say I count my blessings not my curses.
It's only been a few months of my new Christian path and yes I know for some of you may make no sense but following this path can do more good than bad, think about it Christian values lead to a decent life, a sinner life only leads to trouble; in the form or drugs, violence, infidelity, hatred, envy, pride, and all the evil you can think of.
I am just saying you only live once so may as well try asking Jesus for help, I recommend using an audiobook or podcast because actually reading may be boring but listening to the word as is written is easier to understand for me. I hope you don't ignore my post and that you can find peace in your heart, and for all of those reading this, it goes for you too try it if you can be humble enough to accept that you're just a mortal incapable of understanding the complexity of life challenges and powerless to face them, humble yourself to God.