Question for people who have toddlers And potty training?

Angela • 22, taken by an amazing man, have a handsome son and pregnant with my second child. ❤️
Was wondering what I could do to help my son use the potty. He always tells me has to go use it but when I put him on the potty he doesn't go just sits there. What are some ways to help motivate him to actually pee on the potty?? Thank you.