i have this bug where i make custom setting in the video section for the graphics once i click apply its says reset my game but once i reset it, the game reverts to its default settings it originally had
Try renaming the Settings_v0.ini file that should be in
…/My Documents/Overwatch/Settings
If that doesnt work you can always change the settings in the file itself and then right click > Properties > Read Only > Apply. Then the game wont be able to change any of the settings on its own.