That's what I was going to suggest. If you're a non-coder who needs a portfolio site, you already have a body of work ready to show. Put that up on a Squarespace site with a nice template instead of wasting time going through HTML/CSS video courses to create one from scratch.

If you're genuinely interested in building from the ground up, definitely go ahead. But if that's not really your goal, you will almost certainly be disappointed with your first site. HTML/CSS courses don't cover design (typography, element spacing, color palettes), so you'll look at your site, you'll know it's ugly but you won't know why. And you won't want to put it online, thereby wasting even more time.

Don't do that. Let your work speak for you, and don't feel embarrassed about using a template. Your audience cares about the quality of your content only, they will be completely oblivious to what is happening behind the scenes.