@brampurwala said:
API for favorite filter with genre id.
Pls let me know if TMDB has any API for filter favorite list with genre id.

For your default "My Favorites" page using API only the filter that is there.
&sort_by=created_at.asc
&sort_by=created_at.desc
Of course you can filter on your side.
The response shows the genres of each movie.
What might solve this is for you to create personal pages separating the movies by genre.