You were the chosen one! You were supposed to save lemmy, not destroy it!!!!

nah, you at least admit your mistake, that is how we learn the right way. happens a lot in open source code. don't be hard on yourself, just review the fixes and make sure you understand what went wrong. :)
you're making useful contributions, that's more than a lot of teens (and most adults) are doing these days.

Don't sweat it man. I've seen null pointer dereferencing cause drones to fall out of the sky so this is not that bad. One time I did a code change that disabled an e-stop feature that stopped the propellers from spinning. Thankfully no fingers were lost because of that! The code was reviewed and passed the software simulation tests at the time. It just got missed.