have you tried writing a sentence in a RTL language?

I tried in mine, the dot at the end of the sentence is at the wrong side of the text ,it’s at the right side, it should be on the left. (atleast that’s what it shows in the preview, I prefer not to give extra information about myself like what kind of language i use).

Do RTL languages even work properly in lemmy, is there an instance using a RTL language?

There are millions of RTL language users (arabic is very popular), some (almost all?) living in dictatorships and might appreciate having control of the data (They might fear big tech will collaborate with these governments and give them information about pro democracy activities).