How to potty train girls?

My daughter is 3 1/2 years old and will absolutely refuse to use the potty. I feel like I have literally tried it all and nothing works. I think at this point it’s a fear that she has and it’s one of those things she’s worked up in her head so she doesn’t even want to try. She is MORE than ready to the point where every time she pees in her diaper even just a little she needs a clean diaper so we are constantly changing her diapers and going through soooo many diapers a day.