He can’t make a justice retire, and he can’t appoint new justices until a sitting one quits or dies. The president needs Congress to increase the size of the court, so that’s not an option to him either. The president cannot “force Congress” to do anything. He certainly can’t force them to create new states on his whim.

If the presidency had that kind of power Trump would have used it when he was in office, though to much different ends.