Unfinished Quiz APP | Trying to build it with only HTML, CSS and JS

What are you most proud of, and what would you do differently next time?

Recently I just realized that I rely too much on React, Tailwind, Nextjs and things like these. And my understanding of JS is so poor that I was unable to answer any question from the interviewees.

So I was trying to build this app with just Javascript, HTMl and CSS. It turns out so hard as I need to deal with all the logic by my self...

I submit this unfinished code because I want to see how others do this challenges. It's necessary for me to learn JS from the beginning and I am open to any feedback.