Most of us do have a box of holsters, but we usually didn't buy these all at once. We probably did like you are doing, getting recommendations from forum members on what holsters they like for a particular gun and then we try that holster.
What you've probably noticed is the recommendations you got, were not all the same. Some were IWB, some OWB, some kydex, some leather, etc. Everybody is different and they have different needs and like different things, so what works for one may not for you.
The other key thing to remember - carrying a gun is generally not as comfortable as not carrying a gun. Even if you are carrying a little polymer gun like a Glock G43, it is still less comfortable than what you were doing before you started carrying. It's a matter of getting used to carrying a gun, whatever size it may be.
The best you can do is try something, usually something well regarded, it will save you time and avoid sorting your way through junk, and see if it is better than what you tried before. Eventually, you will narrow it down to what you like.
One of my first holsters was the now discontinued Raven Concealment Phantom. It was the original kydex pancake holster, now copied by many. With this one holster, I could change the ride height and cant, by adjusting the belt loops, and by adding IWB loops, I could try it out IWB. This allowed me to try different methods of carry with one holster.
