I don't want to fail HELP !

12th grade high school student here, i need advice because I don't want to fail, in my country (Morocco) teachers are protesting against the gov, and we didn't go to school for over 2 months, this year and the next year are very important and I can't afford to fail.

what should I do there is no one to teach us, and I don't know how to study for my own, I'm pretty bad when it comes to concentrating and focusing on something I keep daydreaming a lot, and my dad has been telling me you have youtube and there are so many websites to get lessons from, I know that but it's very difficult for me.

IDK what to do anymore help.