How to add middle name?

Question

WordPress

Hello everyone. There is a standard registration form on TMLogin. Need to add Middle name between name and lastname? Or at least rename the Nickname field to Middle name and put it between them. Maybe someone came across. Of course, I installed plugins for adding custom fields, but they do not change the WordPress ones by default. Just add your own.
Thank you for your attention. I will be grateful to everyone for advice.