Scarleteen

due to porn watching i am feeling more sensations in my penis during masturbation so got early ejaculation due to this i think.

so should i dont watch porn before/during masturbation if i wants longer ejaculation?
as porn have main centre in penis/intercourse so i felt more sensation in my penis due to this maybe as it somehow affect the thought process.

This is another example of the kind of thing that's just all about your own experimentation, and then your personal preference and choice.

What you "should" do when it comes to these kinds of choices with masturbation is whatever you want to do.