If they've only been bent once, you can just bend them into their original position again.
If they snap off, you can (gently) lift the black plastic frame on the bottom up to remove it (given that all other pins are straightened).

Then you can desolder those defective pins and solder in some new ones. You can just buy a pinheader and remove the pins from there for your repair.

For that gentle bending, I find a medium-sized crosshead/Philips screwdriver is generally best.

If bending them back, I'd just move them a bit - wait a bit for internal structure to settle, then move a bit more & repeat,
rarely this can make a difference ... (but you have to be extra careful as it makes for more times you can screw it up)

I use a super-fine set of needle-nose pliers for such things. I also have some different sized "machine screw" socket pins
which can help a lot (depends on how fine the pins are)

I'd use needle nose pliers on that