Before getting into the repairs, if you find yourself repairing through hole boards especially replacing chips and sockets, then it’s worth considering a desoldering gun like the Hakko FR-301 available on Amazon USA.
I got by without one for many years by snipping parts then heating up the solder to remove the left over leg before using desoldering braid to clean up the via. However removing parts without destroying them, especially chips and header pins was an exercise in frustration. The desoldering braid would not always remove all the solder, risking via damage and I never got on well with solder suckers.
A desoldering gun makes the task so quick and easy to do I wish I’d spent the cash and bought one years ago. Obviously get a decent soldering iron first, but after that a desoldering gun just removes so much frustration.
With that said and the damage assessed it’s time to start the repairs.