does excessive masturbating affect the sex quality?

hi everyone, I'm new here , i joined this site after long journey of searching for solution for my problem and i hope to find what i want here with help of u guys
before i tell u my story i want to apologize for my bad and weak language , I'm arabian man so I'm not very good in English
now i will tell u my story , I'm 23 year old , i was doing masturbation since i was 15 , i was doing it excessively, 15 or 20 times a day , i know u will not believe that but it is unfortunately true , before 4 years i met a girl in my college and we became friends, then our relationship developed so she became my girlfriend and my love , but we didn't do any sex intercourse, just before one week , i took her to hotel and we slept there for a night , during that night i was attracted and i felt i want to de sex with her , but i tried a lot but my dick wasn't respond, that was the third time we try to do sex and i fail , my dick stand only when i masturbate , but when she do blowjob for me or when she help me in masturbating my dick stand by 40% only , even when she sit on it , it doesn't respond at all , my dick respond only when i do masturbation by my self , i want solution for that cuz I'm going to be crazy I'm so afraid , i do not watch porn a lot maybe 5 times in month , usually i masturbate with my imagination,
i want to ask u guys ...
if i stopped masturbating for 90 days , does that will help me to improve my quality in real sex withy partner?
does my problem came from excessive masturbating for a years?

 

but bro i wanna ask u something, did u experienced a situation like my situation? i mean did u suffered from the same issue?