You can, but it depends on game. Many PC games has incompatible language files with Switch version. LA Noire for example. LA Noire for this day I couldn't figure out, because scripts for making blobs doesn't work with uncompressed files from Switch version (PC has compressed files).

If you know that your game on other platforms has Hungarian, but not on Switch, you can try to check romfs for hungarian files and replace them with English files or disassemble exefs and try to replace instructions to take Hungarian instead of English.

 

@bicku There is already available polish translation for Divinity: Original Sin 2. I send you PM.

 

You need to try. As I said - I couldn't do it. So I'm not the best guy to ask about LA Noire.