I've really come to dislike the ubiquity of "gambling" in combat, especially when the stake is doing what you ordered, or wasting your entire turn, potentially endangering the unit and the whole fight (XCOM comes to mind with its 95% hit chance cap, but it's one of many). So what are some games with more deterministic mechanics? They can have RNG elsewhere, just not in player actions. Off the top of my head, I can name Hard West and iirc Phantom Doctrine. And maybe Expeditions Conquistador? I can't recall exactly, I'll have to take another look.

Edit: Into the Breach is also a good example.

I like more determined ones. I think random should be there to make the game not so monotone ,but is should be there to decide if you fail or not. So random map/enemeis/missions are fine , random 5% you die and start over is not.
Random is acceptable for failings if the game is designed that way , like you lose some battles you can still continue the campaign, but if it puts you into an unwinnable situation then it is bad.

Ikenfell doesn't have RNG. Instead, it has action commands, like in Super Mario RPG, that determine the result of an action; if you press the button at the right time, your action will be (more) effective and the enemy's will be less effective. (There's an option to force correct timing without having to time it yourself, if you prefer.)

You could also look at other games inspired by SMRPG, like Underhero.

In Undertale, I think there might be some randomness regarding the attacks the enemies use and which enemies you encounter, but hitting the enemy or dodging their attacks is not random; hitting is time-based, while dodging is like an easy bullet-hell shump.

With this said, these mechanics do make the game feel less of an RPG to me.

Another thing: JRPGs tend to be better than WRPGs in this respect. WRPGs tend to have mechanics more similar to Dungeons and Dragons when it comes to accuracy and evasion (in particular, skill improvements would traditionally boost accuracy but not damage), while JRPGs not so much (though there's still things like stats effects).

Fell Seal doesn't feel that random, especially since there's a setting to weight the RNG in your favor, if you so choose.

Star Renegades comes to mind as a roguelite. The characters can level to 10 and there are items, that can be equipped. There is no RNG in combat, you can't miss. It is all about, how you play.

The only randomized things I remember are the procedural generated worlds, but not how far it goes regarding items and enemies.

I found it very similar to Into The Breach in that regard.