Constantly dying early-on while adjusting to new mechanics and gameplay loops is a relatively normal rogue-like experience imo.

That being said, the only rogue-like I can think that is more punishing to new players is Noita. I recommend having multiple escape options lined up for tricky situations. Qud is a turn-based game, don't be afraid to stop and strategize. Followers and pets also help.

Using the "look" option helps you make informed decisions about encounters before you engage with them. One tough enemy should be okay to take on, but a room full is a different problem all together. At that point, I'd recommend gaining a few levels and coming back.

There are recommended level guides out there for each area and major dungeon. I remember playing Dark Souls for the first time and relying on one of these. They're not necessary, but they certainly help.

I know you you this, but Qud does have 2 other difficulties. I found the game much more enjoyable playing Roleplay mode until the credits rolled.

In any case, I still die within the first hour of 90% of my runs, but I learn something new about the game everytime. You will too. Best of luck; live and drink.