How to relax sphincter?

I feel that I’m always too tight to get much movement with the aneros

How do you make it more relaxed and loose?

Do i do some anal stretching?

Help me choose an aneros

Ive had progasm ice which I’ve lost. I have a trident eupho which i cant get access to because isolation. So I’d need a new one.

Ive been considering trident helix, Trident maximus or progasm jr (as I couldn’t get ice to move much, but when I achieved it once before losing it gosh it moved)

I also have an issue with the k tab on the eupho being far too low compared to what I remember with my old progasm, so I’m a bit worried the other trident line would have this issue.

I need help choosing one.
Thank you kindly.