This seems to be the best solution. It lets you select country and it even has all the local apps indexed.

Searching by language was locked behind a subscription which infuriated me but I guess subscribing to a service so that you can know what service you should subscribe to seems about right for 2024.

This one is my favorite. Even my go to app for checking where movies might be and saving lists

Letterboxd uses justwatch to tell you where a movie is available. If your a paying customer you can filter things by streaming service.