Things slowly start drying out as we get older. Consider applying lube (discreetly if you're shy, wantonly if you're not) before connecting the parts. KY or Astroglide are grate, non-flavored, non-heating, non-spermicidal, otherwise it can compound the irritation. That helped me a lot, I rarely get UTIs any more. And, shower ASAP after a BM, to reduce the risk further.

Ask your MD if you might be diabetic also.