Steam Game Recommender System based on Steam user ID

I'm learning mL & dL, so I have a project idea but I have a problem maybe you could help me get an idea of how to solve it. So the project is about the Steam Game recommender System, he will recommend games based on games you purchase on steam and the playtime. So I have an idea of how should i train the model and get predictions, But in deployment I want the user to write his steam id so it will access his play time for the games and make predictions based on that. So I'm stuck in this part I don't know how to access the data of the user. any idea or similar projects could help. Thank you