Dear VibeCoders, How do u build good UI?

Hello,
I have been vibe-coding for a while now, although I have programming knowledge and developed websites and apps before the AI-era but now I feel vibe coding saves a lot of time.

However one thing I have not managed to do till now is building a good design for my websites/webapps.

I have seen some fellow vibe coders building Framer/ Figma level UI/UX on their webapps and also claiming to not have programming knowledge,

How do u guys do it, what is your workflow?