I have been having a GREAT DAY.
I was messing around with Ardour today, but I had no audio output, I thought it had something to do with not having JACK, I decided to follow a tutorial and did so, but that didn't fix it and I actually lost all audio to my whole system, so I decided to undo all that I did, one of the step was to add my user account to a special music group, 5 minutes after finding out how to remove myself from it and doing it, I found out I had lost my sudo privileges, and I am the only user on the system. I looked up tutorials to fix this but all of them required me to get access to the root shell, which I can't because when I boot into the systemmd-boot, I don't have an option to get to recovery, any help with me just being able to get back my system without having to start over?
I use PopOS 21.04
I have a dell XPS 12-9q33(if that's relevant)
any help would be appreciated

Do you have a Live image to boot from instead? If so you could boot that, then mount the root partition, and then edit its /etc/group file.

I am on a live image right now, what exactly do I have to edit? I don't want to mess it up more

If you mount the main hard drive, there will be a file etc/group inside the mount point. Find that and make a copy of it called etc/group.orig or something. Then edit etc/group on the line starting with "sudo" by appending your account name on the line. If there is already something on that line, put a comma in between the names.

Or, if there is already one or more members of the group, add a comma:

Either way, everything to the left of the last colon should be left alone.

Edit: there is also the file gshadow which should get the same treatment, for thoroughness, but the above is the minimum for that approach. chroot is another way.

It may be simpler to boot single user mode and attempt to set a root password. Reboot, log in as root and do whatever needs to be done. The sudoers file may be misconfigured.

"Tutorials" are supposed to teach - many do not. They often consist of a set of, possibly outdated, instructions which may not be the best approach.

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When you boot the system, you should be able to press e to edit the boot option. Then at the end of the 'linux' line add then press F10 to boot.
This is a temporary change and is not saved.

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Oh thank you very much, I was able to boot into recovery mode and add myself back into the sudo group.

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