Stropping is somewhat controversial. Or at least, widely debated with some strong opinions. First, let me say if you're watching YT vids, I recommend skipping anything by Burrfection. Just say no.
That said, yes, you can strop on all sorts of things and be effective.
The best piece of advice I can give regarding sharpening is to understand the why so the how comes naturally. Don't try to do this by rote. You can achieve good results in many different ways and that's why there are so many different opinions, tools and approaches.
A dedicated strop can absolutely be effective. I do not live in the "no strop" camp but these days I do minimize their use. There is absolutely nothing wrong with stropping if you get good results. Do not over strop or it can be counter productive but if you like your edges, then all good. But they are not necessary, especially for kitchen edges.
Stropping is done to remove the last tiny remnants of burrs and to refine the edge that last little bit. Many sharpeners will say to strive to get your technique to where you can do that same thing on stones. It takes practice and patience to do that. But even so, that doesn't make it absolute. Many professional sharpeners strop.
Get a method that works for you and your different knives and steels and then start to experiment.
Also, I absolutely echo the SG500 recommendation. It's more often than not my starting point for sharpening vs. quick maintenance.
I also flatten my stones with each use.