It depends on what service you are using, and what licensing they have. It's possible that original versions may not even be available in the US. You can use the website/apps for ReelGood and JustWatch to see what services a movie is on, then check that service to see what options are available. Often, the only place I have been able to find original language of older movies is Hoopla.
https://reelgood.com/
https://www.justwatch.com/
Hoopla, and the similar Kanopy, are accessible through your library "card". You can "take out" several movies a month. Some libraries use Hoopla, others Kanopy, just check with yours. A big plus: NO ADS!
https://www.hoopladigital.com/
https://www.kanopy.com/en
