There's a difference in pork loin and pork tenderloin.
Loin is the white meat of the backstraps.
Tenderloin is located inside the hog, one on each side of the spine and can be pulled out without cutting.
The best way to fix it is, cut across the grain and make cutlets about 3/4" thick.
Lay the cutlets on their sides and grab your meat hammer and pound them down to 1/4" thick.
dredge them in flour, then beaten egg, then your favorite coating, cracker crumbs, bread crumbs, more flour, whatever turns your crank.
Fry them golden and they are tender, juicy, and delicious.
Edited to add, we haven't bought loin porkchops in years. Only when I find the butt end chops do I buy them because they are the dark flavorful chops you see occasionally.