For me too, it took a while to gain proficiency. It was originally designed as a studio tethering tool for medium format cameras so it still has a different take than some of the other raw processor tools. What the company learned from that background really shows itself in the color management capabilities of the modern product, including managing skin tones. I also like its out-of-the-box rendering of my Nikon and Fuji files - superb. Other features I find useful include the ability to completely customize and share your workspace (and to have multiple workspaces), sophisticated scripting for large jobs, dynamic range manipulation in the deep blacks and bright whites, healing brush and many other capabilities. Lots of styles ("presets") are available, along with film emulations if that's your thing, and process "recipes", which provide a lot of simultaneous export options.
Coming from my beloved Aperture, I tried other things in the interim including LR, DxO, Luminar, etc, but what raised my game were the videos and webinars over at learn.captureone.com. I find David Grover to be an excellent teacher and I was able to get further from those than by just "winging it" (my usual way of learning something new 🙂).