Even plain zinc oxide will usually permit healing if it’s applied *after* each BM, so the barrier is always in place when it’s needed.
I also strongly recommend a bidet attachment on the toilet. There are fancy, expensive ones, remarkably inexpensive ones, and everything in between. Thorough cleaning without scraping makes a big difference for me.
I don’t know how many BMs you tend to have per day, but if it’s already in the 4-6 range then adding or increasing a bowel slower, like Imodium or Lomotil, may not be ideal. In any case, if you haven’t tried it already, psyllium fiber could potentially make a big difference. Stools that are too liquid tend to be fairly irritating, and the psyllium adds bulk to the stool. I just follow the package directions with breakfast and dinner - YMMV.
Good luck!