@capstone111 said:
API inital list of movies
How can i get for example a random list of movies or favorite list to render ?

English is not my native language.
I don't understand what you mean by "to render".

Random list API request does not exist.
What is possible is for you to use Discover, determine filters and select items randomly using your code.
https://developer.themoviedb.org/reference/discover-movie

Each user has their own list of Favorites.
As well as your Watchlist and Rating.
Just add items to the lists.