A child will eventually potty train on their own if and when they are ready.
If a child wants to wear diapers then they should be allowed too but if they prefer to use the toilet then they will and you should never force potty training.
Diapers are much better than using a toilet anyway.
Kids don't need potty training and if they want to use the toilet then they can but if not they should wear diapers instead.
Diapers are better than using the toilet and it's better to wet in a diaper at 5 years old, 6 years old, 7 years old, 8 years old and beyond than to hold the pee.
When I have kids they are never gonna be potty trained and will wear diapers all the time and I will change their diaper even when they are 8 years old, 9 years old, 10 years old and beyond as long as they live with me.
No toilets for them and diapers it will be.
I don't use the toilet anymore myself and use diapers all the time as an adult.