I recently discovered an app called ReelGood that allow the user to search multiple streaming services for films they would like to see. For instance if I wanted to see if a specific film is available on any of the paid or free movie streaming services, I search for the film on ReelGood and the app will search all of the streaming services which I have indicated I can access. If it finds the film on a service I can access, it will add it to a "to view" list for that service. If the film is not currently available from any streaming service I can access it will keep a list of these films and periodically check for availability.
I recently found several movies on Amazon Prime and Tubi that I wanted to see.
Check it out and even if you don't use it, you can look like a genius when you tell your friends "yes, there is way to find out if a movie is available from a streaming services without manually checking them all".