Anyone tried +- 100B models locally with foreign languages?

I am quite curious as I tried Gemma 4 31B, Qwen 3.6 27B, GLM 4.7 30B and some others in my native language (czech). Gemma performs "best" and considering the fact its "just" 18GB model - it actually blows my mind how well it can respond in my language. But lets say 1 in 50 words isnt correct. Very often its not even existing word, but its very similar to what i would expect to see. So its obvious that model tries to "remember" the correct word.