Has anyone else been through this?

I'm not really sure if what I'm experiencing is directly linked to porn. I started masturbating at around 11 years old, and only started watching porn when I was 13. For the next 5 years, I masturbated quite regularly maybe, once or twice a week. When I turned 16 and my hormones were going crazy, I had to masturbate every day otherwise I couldn't sleep because of my sexual urges, everything was going fine, I had very strong erections all the time, had an incredibly high sex drive, but I had conditioned myself to ejaculate as soon as possible (usually after a minute or two of watching porn).

However everything suddenly changed a couple of months after that when I went to university, my libido suddenly dropped, I stopped getting morning and spontaneous erections, started getting tired, had depression, by that time I was masturbating around once every couple of weeks, I was doing it more out of habit than out of actual need. I experienced severe premature ejaculation with the first girl I had sex with (ejaculated after 10 seconds) and with most of the girls after that. I went to a doctor to get my thyroid levels checked and everything was fine. I don't know what to do, I am honestly contemplating suicide.. I'm only twenty and I can't imagine living like this anymore. Even if I don't masturbate for weeks, my sex drive is still incredibly low and I don't see what the point is. I hardly ever watch porn now as I don't feel like it at all. I want to regain my erections and stop PE for good.Has anyone else been through this?

*PS: When I first started masturbating, it used to take me forever to cum, now even if I 'm not aroused and I have a semi boner, it only takes about 3 minutes to ejaculate.