Ask HN: How to learn UI/UX as a data/BE engineer?

Hi HN, coming from a data/ BE background I feel extremely familiar with reasoning about systems and performance from the cloud-infra to the pipeline stack level. Or I'm super familiar with data visualization. I feel like falling off a cliff when trying to extrapolate that knowledge to the more customer-facing world. Despite having some tool ideas in the past, I realized I shy away from going towards the front end because I really lack any conecptual frame of how to think about and subsequently implement UI or UX. I don't mean that in a nitty-gritty-designer focussed way but more like first-principle understanding: What makes a good color scheme? What makes a great wording and why? What's a good form of presenting information? I feel like I can recognize good UI/UX when I see it (as is often the case with HN company LPs), but I'd totally fail at distilling check boxes that such good examples tick. Any pointers to how I can learn about these worlds and devel