Interestingly enough, he fights in his base form at times ... that causes him to appear less. Rather, DBS simply doesn't go out of its way to include Vegeta as much as possible, like it does ...

DBS Chapter 103 ends Superhero Saga with epic battles between Gohan, Goku, Broly, and Vegeta, leaving fans satisfied ... While Gohan started in his base and then Ultimate form, eventually, Broly ...