Penis feels dead

I don't know where to start. I am 20 years of age and my erections are weak. I suffer from weak erections and fast ejaculation because involuntarily I flex my penis muscles which trigger ejaculation. The skin on my penis is wrinkly, I have no sex drive and little sensation and 'control' over my penis. I did jelqing exercises and also masturbated since a young age. I also suffered a penis injury about 2 years ago when I heard a cracking sound from my penis but there was no pain. Is there any hope?

Also, I want to add that when I look inside my penis opening there is always a liquid present. Is this normal?