I'll take your word for it, I've never used Lightroom.

Whenever I played around with Darktable it seems finding a tutorial to get the effect I wanted was just a minute of searching away, and there's a ton of beginner tutorials available too.
https://www.darktable.org/2024/12/howto-in-5.0/

But then I was the kid that rtfm the game manual on my way home from the store and love dense UIs as an adult. :)

Darktable is a godsend to me for converting film negatives.But I pretty much only use image conversion, RGB curve, then fidget with the exposure and RGB sliders in negadoctor a little more then I'm done. No idea how to do anything else.

Been usin DT for close to a year now. I agree the learning curve is a little steeper than light room but once you get it, everything clicks into place. I can't believe how powerful this program is and it's free. It's unbelievable

You could give Photopea a try, if you're looking for a free (as supported) alternatives, it has all core functions and a interface that looks very familiar. No installation required so you can easily test it, and use it in any browser (not sure how well it works without mouse and keyboard or low end devices though).

If you want more than core functionality I don't think there is a (legally) free option out there.