I’m guessing you’re thinking of Helicobacter pylori, but even with a diagnosis, treatment can still be elusive. For one thing because a heavy dose of multiple antibiotics can be a lot for the body to deal with, and personally I’m guessing that with mounting resistance to such, sometimes they flat-out won’t work, anyway.

Meanwhile, cutting down on gut acidity and building a good biome seem to be best for the long haul.

In any case, IME spicy and acidic foods can absolutely exacerbate the situation.