Probably savable, I guess it just depends how much time / effort you want to sink into it.

I recommend starting by finding where the problem is. Try shorting the pins that are soldered to the board, that will tell you if it’s the switch itself that’s broken.

There seems to be a fair few videos on YouTube around this type of keyboard repair aswell.

KDE has an interesting project that lines up with this. Unfortunately I’m not too sure how progress is. Plasma Bigscreen

I was looking for something like this, thanks for sharing!