im 17

actually i watch porn very often which means i maturbate

when i masturbate i use my foreskin to do it

i think its the reason my glans became so sensitive

when i do it glans give me so much orgasm to me

so i always stimulate my glans to masturbate

but i think it gives me premature ejaculation

the reason i could know is that when i stimulate my glans i shoot it VERY

FASTER(takes a minute?) than when i dont

how can i overcome this situation