Getting loose erections while sleeping

hey guys I'm so confused why I'm getting loose erections and not the hard ones while sleeping and I can get hard to fap but the length of penis is not how it should be but my dick is hard also I did nofap for 72 days but relapsed and I think I fapped for like 10-15-17 times and I think only cuz of that my body is not functioning properly what should i do to fix this problem please anyone help genuinely so I could get my size back and get hard erections while sleeping also if I do nofap and recover then have sex with a girl will I get the same problems that I used to get while fapping to porn