I can`t get into my account, it keeps saying "Sorry! Make sure you are online and try again".

I`ve been having problems to log into minecraft, and I cant even get into my account. Every time i try to log into my account with my email and password, and i know its all correct. it says "Sorry! Make sure you are online and try again". its been like this for weeks i tired to search it up but i cant see one thing out there to fix this. its like my account got deleted or something, my account is working on other computers but  not just my good computer.