https://www.amazon.com/Prime-Line-2495- ... text&psc=1There are replacements for the mortise set. If you are lucky, its an easy swap out, sometimes you might need to do a little work on the door ie chisel work, but usually not bad.
Use a razor blade to carefully cut the paint, and remove. Fill the holes in the door with a dowel rod, toothpicks, a golf tee etc, whatever you can jam in there, and trim with the blade. This step makes sure your new screws have something to bite into.
I worked with my uncle one summer as a kid doing remodel work on old houses. Replaced a lot of these.