I'm starting to learn that fish keeping is a lot of trial and error. No matter how much information you absorb, actually doing the thing is what's going to matter.
Ex: A month or so ago I got some white cloud mountain minnows for my 20g tank. Literally everywhere I read & videos I watched said how peaceful they are, they're such great community fish, etc etc. Well, those fish were absolute TERRORS in my tank. They were incredibly territorial, constantly went after one another as well as the other fish in the tank, and just constantly seemed to be aggressive. While they weren't necessarily hurting one another, it was literally chasing from one end of the tank to the other, and around again. Had tons of hardscape and plants for sight-line division and just... Yeah. Suffice to say I ended up rehoming them lol.
So my experience just happened to go against what everyone else claimed about that kind of fish, so if someone were to ask about wcmm, I'd have a completely different opinion than other people based on my own personal experience. I think you gotta just take in as many opinions and information as you can, and then make the best choice you can, all while knowing you might have to end up changing things anyway.