Everything I try to make in Daz turns out like a bad transporter accident. I applaud those making great games out of it. (and Ren'Py of course.)
I can heartily recommend it, but it's a tool with quirks, and sometimes it does the weirdest things for... reasons. But TBH, there's a lot of systems at play to wrap your head around when you get started, and when you've been doing it for a while.I was thinking about trying it myself. I hope it gets easier for you!
Some of that is about the technical side and getting to grips with a ton of settings and sliders and options and what they do to the rendering process. Some part of that is on the esthetical side, understanding what make a good image (lighting, lighting, lighting) and how how you can translate that into DAZ. Some of it is getting accustomed to the tools at your disposal and how they fit into a workflow and the little hacks and tricks and small quality of life things, and knowing when to ignore daz and turn to some other tool instead. And all of that takes time to get better at it (and it never stops taking time either).
And a great deal of it is finding ways around one of a hundred things that are flawed or bugged or just don't do what you need them to do anymore when used together with something else you need.
But like everything, stick with it, and after a couple of years, you may find yourself thinking you're... adequate with it. And then you look at some renders by someone who's been at it a few years longer still and you think... not quite adequate. And you try and figure out what they did and how they did it, and make things a little bit closer to adequate than you did before.