I know that feel friend. Just a few weeks before lockdown, I had finally gotten over a Magnesium deficiency issue which lead to heart palpitations so bad that I was mostly bedridden for the last half of 2019.
Sorry especially about your gf and losing out on getting to enjoy the last year of college life. It all just ends up feeling gone before you know it. I just keep praying that vaccine works and come out soon, I don't care whether it's made by the Illuminati JooLizardMasons or not, I just want a reason to feel that getting through the previous year alive wasn't some big monkey's paw.
Also, what kind of guitar do you play? My Midi got me through high school sane.