Yes. 9mm Kurz (or Cortos) is the European designation for .380 ACP. also called .380 Auto.
380 ACP, 9mm Kurz
Ask a gunsmith for help
A double action pistol that chambers a .380 ACP round. AKA 9mm Kurz
.380 ACP, also known as 9x17mm, 9mm Short, and 9mm Kurz.
Try want ads, gun shops, gun shows, on line gun auction sites.
Follow the instructions in the owner's manual. There are a series of Gun Digest books on assembly/disassembly of handguns and longuns you could also use.
If you don't have a manual, find a gunsmith and ask for help
Best left to a gunsmith. If you just have to do it, get one of J.B. Woods books on handgun disassembley.
Pull back the slide and lock it, oil the rails, lightly oil the barrel, return rod, and return spring.
To field strip a Grendel P-12 .380, first remove the magazine and clear the chamber. Then, push out the takedown pin located above the trigger guard, allowing you to separate the slide from the frame. You can now access the recoil spring and barrel for cleaning and maintenance.
Without knowing what the actual make and model of your pistol is, the answer will be the default "gun show, gun shop, or try E-gunparts online".