Please dont apologise for it. You are incredibly smart to be able to learn a second language and have the courage to use it.
Everytime I read someone writing/saying “I’m sorry for my bad English” I wanna say that it is okay to make mistakes when you are not speaking your first language (and even when speaking your first language). That’s the beauty of learning, make a mistake and learn from it to become better.
Please be proud of yourselves and never lose your confidence