Keywords in multiple languages

It's Lenka

Hey guys, I was wondering, how does it work with keywords? What if I want to target particular countries?

Let's say: There is a video in Czech language, we make subtitles in English, description of the video in English, but we put the description of the video in 6 languages and inserd our relevant keywords in 6 languages.

Is that ok with YouTube? Won't it penalize this action? The content is made specifically for them, we wanna make sure they find it if they search for it in their languages.
I don't think it will penalize you, but I think it would help more if you captioned your videos in multiple languages. If someone doesn't speak english and finds your video from keywords in there language but the video is in english and there is no captioning in their language, they aren't going to watch. I hope that makes sense!