Do you push out when you’re being penetrated?

I read once that the way to open up to take a cock is to push out whilst he’s pushing his dick in you. Is this the answer to bottoming to those that struggle to take a cock?

I also remember reading once about how you should tighten your sphincter and keep it tight for as long as possible. Eventually you’ll not be able to tighten the muscle any longer and when the muscle gives up, it will be relaxed more than normal and enable you to take a dick with more ease.

Do any bottoms here agree with these statements? I don’t bottom but want to, yet I really struggle to take more than two fingers. I’m trying to find ways that will make the process easier for me.