Website building is not really my thing, but when I tried looking for a builder for a project all the waaaay back in high school, Wix was the easiest. It does everything for you. A plug and pick. Definitely recommend that if you’re doing it just for a portfolio and are not aiming for searchability.
But if you want to be really extra, you can come up with a web design from scratch (i.e. create one on photoshop) on how you want your website to look like and hire/collaborate with a web programmer/developer. I sometimes offer this a gig for a few clients as well as a package (e.g. I design their entire website for them). it’s tedious, but the ROI is high.
I usually hire from cheap-ish countries that have the top developers/programmers in the world like Taiwan and the Philippines (reference). Even with a small/medium budget, you can find a good person on Reddit. I don’t hire off of F*verr anymore because with a previous experience lol.