What do you do when you have to speak in your native language and you're in a foreign country

I'm having a hard time recently. I'm getting asked about my nationality all the time because of my accent. So when I have to speak in my native language it's embarrassing for me because I don't speak it that well anymore. Moreover, I'm not used to speak it, my pronunciation and my vocabulary of my native language is not like it used to be. My native friends are surprised that I have changed my accent and my way of speaking. I don't know what to do, I can't even imagine myself speaking in my native country, I don't know what accent I will use, I won't be able to express myself properly because my vocabulary is very limited. It's like I'm talking like a robot with few words and not with my own native language. I'm starting to forget the meaning of native language for me.<br><br>&#x200B;<br><br>Sorry for my bad English, I'm just trying to express how I feel.