Media descriptions option in VoiceOver and using it while learning languages

iOS & iPadOS

Hello! So, I have a question. I am learning German language and I know that one of the good methods to learn languages is watching movies with subtitles. However, I know there is an option in VoiceOver to read subtitles, but I don't know what apps I can use to read English subtitles while listening to content in German. If you have any experience in using this option in VoiceOver please tell about it and if it is useful or not, which apps you are using or maybe it is not useful for us at all and I should use another way to practice listening skills. Thank you!