I here a lot of people really like Stable Diffusion for Krita (https://github.com/Acly/krita-ai-diffusion). It's pretty easy to set up, powerful, local, and totally free.
I think DrawingPics installation is more friendly, I wrote a blog about it https://docs.drawing.pics/index/getting-started/drawingpics-...
It seems it needs Docker to be installed? It might consume more power than running in a local Python environment.
By the way, the plugin is great.