OH MY . . . raised panel doors require considerable carpentry experience and tools. If you do not own a shop including table saw, router, a bunch of clamps, assorted hand tools, etc. . . . your best bet is to find a craftsman who does. You will either have to pay to repair or pay to replace. Your chances of finding a salvage yard which has your doors is slim ... but worth the try.
There is no simple "Doors for Dummies" available to you. Sorry.