I wasn't able to delete the config data or the online images saying the action was interrupted.
this one? C:\Program Files (x86)\Steam\steamapps\common\Mount & Blade II Bannerlord I tried it but nothing.
I tried what you listed and made sure the hidden files were there ,And made sure there were no banner lord files left but it keeps crashing so I tried again to make sure I didn't mess up but the same thing.
I use mcAfee and disabled the anti virus and firewall and that didn't work I also have the admin rights and I have verified the game files many times but nothing :/