Potty training advice for 2 year old girl?

Kalsey

My daughter is 2 1/2 and we are trying to potty train. She has peed in the potty a couple times but it’s not an easy process to get her there. She cries and freaks out when she sits on the potty and will hold her pee in until it’s nap time or bed time and we put a diaper on. I have tried everything to help her anxiety when on the potty but nothing seems to be working. Any tips for making this easier (if possible)? Thanks in advance!