Please help me

Please help me

M(19) i was addicted to porn and death grip since 10 years and when i had actual sex an year ago- i felt numb and didnt feel anything- i wasnt even able to erect myself and that went about for 6-7 more months,i was really desensitised to normal intimacy,i didnt feel the vagina at all during my intercourses.

Then i decided not to masturbate and no porn for 108 days and i am now HYPERSENSITIVE,i am not able to last a minute,i feel like a loser…i just can’t seem to get it right- i have tried breathing and all and am also doing pelvic exercises

During masturbation i use very very light grip that doesnt even retract the foreskin but during sex i retract the foreskin and then put the condom,so during masturbation its like feather touches and my skin aint retracting but during sex its the entire upper foreskin that does retract and i feel like climaxing within 2-3 thrusts- do you guys think that this could be the reason behind my premature ejaculation? The light grip during masturbation and the extreme tightness during sex?

Please help me..