Changing the language of a text string

I researched (googled) this unsuccessfully, so now I’m trying it here:

Is there the option to change the language setting of a text string?
And with that, is there a way to activate the locl-feature (OpenType). There are languages that have certain letters that get activated by the locl-feature that don’t have a unicode (e.g. localised letter forms in Bulgarian Cyrillic or the ij-acute in Dutch).

Do I understand it correctly that Figma only supports letters with a unicode? A simple copy pasting from other application doesn’t work.

I’m using the desktop version of Figma on a Mac, latest iOS.

Thank you for you help!