hiiii dear
masturbation in past does affect sex in future
masturbation and sex both are same but technique is different
in masturbation u r alone so dont have
anxiety regarding performance n in sex , u have more anxious in presence of your partner
so this anxiety will cause such problem
try to be familiar,,open communication with hem
sex is mutual activity between two partners
remedy doesnt require if u know all the angles of sexual inrtercourse and support of your partner is essential
use condoms to stay long
women on top is useful position
stop and start method is very useful but require mastery in it
plz read on google
take sex knowledge as much as possible
thank u