Ha, my first solder project looks way worse - but it’s also not the worst reference when it comes to a possible solution here;
Being too hasty with removing the old switches, I’d pulled a pad from the PCB. I used some wire to find the right trace, and just soldered a piece to bridge the pins for those switches - it looks rough, but it functions normally.
I’m still pretty n00by in this realm, but those darker contacts on your board look oxidized. You might need to (gently) clean them with some white vinegar or baking soda if you end up needing to bridge those contacts.