I'm really gaining an appreciation for this game.
The basics of Rogue are much the same as any other roguelike. Get the first hit, don't get surrounded, have an escape route, manage your lifesaving items, etc. What makes Rogue unique is the way it combines a extreme unforgiving difficulty with a very limited player character. The end result is that you have to make every minor optimization you possibly can. Like, I don't put too much thought into exactly how I'll explore empty rooms in Sil or how to squeeze every bit of utility out of doorways in Brogue because those little optimizations don't really matter compared to the bigger things you can do. But in Rogue you need every single advantage you can get.
It's an incredible scrub filter. If you come into the game with the attitude that you deserve to win, or that obsessing over minor details is beneath you, or that your failures aren't your fault and it's just a matter of rolling the dice enough, then you are going to get crushed. The improvements you need to make to succeed in Rogue are subtle and you won't see them if you aren't actively looking for them. There was a similar thread to this one that I participated in some years ago, and from reading my own posts, I clearly had a scrub attitude then.
That's not to say that I think it's a perfect or that I wouldn't have made any changes if I was one of its developers, but appreciate it for what it is - a mercilessly brutal game that tests your perseverance and attitude just as much as your tactics.
I've made two recent modifications to my play. First, I test-ID early rings to see if they're stealth rings. Stealth is possibly even more useful than regeneration, and it's not too hard to test for. Other rings are difficult to test for and generally not worth it. Maybe I'll start checking for slow digestion as well, but that's it. The other change is that from floor 9 onwards, I step into a doorway, and then back into the nearest bend in the hallway. This takes a few more turns than waiting in the doorway, but it's more reliable in getting the drop on aquators and other nasties.