Update to this post. Please read it before commenting!
So I ended up following instructions I found online and disabled secure boot in my BIOS and then tried to boot Linux Mint (version 21.2, Cinnamon Edition) with UEFI OS. However, as soon as I did that, i got a "Perform MOK management" screen that said the following:
Continue boot Enroll MOK Enroll key from disk Enroll hash from disk
Can anyone tell me what this means and what I should do? Do keep in mind I'm a total newbie when it comes to Linux. Thanks in advance!
It was discussed here before: https://www.reddit.com/r/linuxmint/comments/15hgmel/what_did_i_screw_up/