Evaluate the first payed website I built

Link: http://buturugabags.com/
Source code: https://github.com/Demon000/buturuga

I made it from start to finish, using PHP as a back-end language, HTML, CSS and JS.
It’s the first time I actually coded anything in PHP, I was always a node.js fan.
I also tried to fix SEO issues and get the page to load as fast as possible.

GTmetrix report

I haven’t used any third-party libraries.

I’m looking for opinions about the quality of the website, both design and code-wise.