Any advice for Cock Rings?

So this is probably quite a Stupid Post but i was talking with some Friends recemtly who are VERY VERY Kinky

Now i am quite shy still around them but they do be fine with my Cock Size even tho im a Chubby Women at Heart lol

and have talked about why i dont wear a Cock Ring for example and explained that while im interested im also very scared sadly as i hurt MANY Horror Stories about such....

So i wanted to ask as to why or what People would recomenned for Beginners?

I was mostly stinking about using a 'Soft" Jelly like Substance Ring as oppossed to full on Metal lol

or maybe something that has a Small Button to take off and on easily as i do have Phimosis so i cant easily wear Cock Rings i assume...

My Doctors told me theres no need for a Operation tho as i can still move it freely without Pain :)