Twins and potty training

Hello, my twin girls just turned 3 years old! Only problem is, they don’t use the potty yet... my one is terrified of it and the other pretends to be scared just because her sister is scared. I know you have to wait till your kid is ready to potty train but I feel like it’s a lost cause. Obviously at some point they need to be potty trained but I just don’t know what to do anymore, I’ve tried everything but now I have a newborn who is obviously very needy and it’s hard to focus on all 3 kids at the same time without any help...

anyone else have trouble training their kiddos?

Is it too late to train them now?

Is it my fault they don’t like the toilet?