I don’t think Facebook needs any intro, if Facebook has locked your account, then you would have definitely known what Facebook is. I know, it must be frustrating to get locked or disabled by any social media platform. Here I will provide you with simple steps on how to unlock Facebook account:
You can send an appeal to the Facebook help page.
You can go to your trusted contacts option and ask for the help
Getting yourself verified on Facebook might be helpful
Try to clear the browser history