No minority deserves special rights at the expense of the majority. You live in Croatia, speak Croatian. Same here in the US. You live here, learn the language and emulate American culture and respect its history. Otherwise, get the hell out and go back to the craphole you came from. This is why Europe is quickly dying.
We are witnessing this in our own country with “hate crime” laws, “homosexual” rights such as marriage, Black Congressional Caucus, etc. It is divisive and meant to separate.
There’s no “Croatia”. They’ve voluntarily given themselves to the European Union.
As far as I know, the Croatians and Serbians SPEAK the same language, along with the Bosnian Muslims (I was there in 1995), but it is religion that separates them all.
So Croatians are Catholics and use the Western Roman alphabet, while Serbians are Eastern Orthodox and use Russian/Greek Cyrillic. Bosnian Muslims use both, but more likely the Roman alphabet.