Sensitivity Worries Me Constantly

Hey u all. Im 17 years old. Ive made mistakes in my past. For example I shaved my penis and I think I got tiny cuts for a day or two after.
I also got a bacterial infection because during football, my groin was in a sweaty, confined place. I itched it a lot until I finally got some spray/cream to get rid of it.

I once masturbated with soap and my penis got cuts on it. I healed it with iodine. That was about 4 years ago.

Im constantly worried that I have or will lose sensitivity in my penis. I constantly worry about it and I ahte it. I mean ive gotten tiny cuts there before and I want to kno how deep the nerves are in the penis and if these cuts have damaged my penis. I tink the pleasure when I masturbate is slightly less good, but that might be because ive done it since I was 13 so theres nothing new. Please help me out