One good treatment for an obsession is a different one. I don’t know if you have ever had an earworm (catchy tune you can’t shake) but if you listen to something similarly catchy it will overwrite your desire to listen catchy tune number 1.
Clearly watching Atheist videos is causing some of the fixation and anxiety, There are other similarly moreish video types (game walk throughs, unboxing videos etc) so the next time you get an urge to watch a theological video try watching something like that instead, and then another one. Are there any topics that you were fascinated by before your current religious debate fixation?