Why doesn’t reverse image search work when looking for reps in reddit?

I’ve been trying to find specific items, and even when I use Google Images to reverse search and get the exact product name, I still can’t find what I’m looking for on Reddit.

From what I’ve noticed, there are a couple of main issues:

1. Post titles aren’t standardized: A lot of posts don’t use the actual product name, so even if I search the correct name, nothing shows up.
2. Results are always the same popular items: For example, if I search for Dior sneakers, I mostly just see common models like B22 or B30. But Dior has so many different styles, and it’s really hard to find more niche ones.

So I’m curious—how do you guys find less common pieces?

Is there actually any good reverse image search tool for reps?