Try and see what works for you.
It could be that a particular language group posts only to certain relays. I haven’t verified this.
Communities apps are early.
Discussion
Btw, can you recommend some community apps? (This is the first I've heard of them)
Publishing to different relays seems reasonable, but it would still look bad on my nostr page, where all the publications would just show up in a row, repeating the gist in different languages.
You could try out flotilla, chorus