My first thoughts of suicide occurred when I was 10

I used to have thoughts of hiding under a car tire, and waiting for a family member to back up. I just couldn’t go through with it. Through the past 11 years of my life I’ve been completely miserable. There has been a series of unfortunate events that lead me to where I am today: living in a shitty apartment alone, no friends, hardly talk to family, education going down the toilet, and terrible insomnia. I’ve been doing some research on suicide methods, and I want to go via ********. But, it seems like there are many failed attempts. Anyone have any advice?