2 year old refuses to sit on toilet

This is our third round of trying to potty train her and she refuses to sit down. She screams and will grab on to me. I don’t know what else to do ): it’s really starting to stress me out and i know she’s stressed to. I just feel really judged that she’ll be 3 in sept and she still wears a diaper. I will accept any advise at this point.

Thank you everyone!! Someone at a family party made a comment about my daughter being in diapers and how only lazy parents have their kids 2 and up in diapers. I felt so mom shamed because I have been trying. We will be taking a break for a while and go from there.