SEO my website published on netlify

Hi, I'm really new to SEO and Web Dev, I used to publish my website on netlify but they cant really be searched unlike my portfolio on wix which has its own SEO tools, so I wanted to know how I get my demo website on netilfy to even be indexable in a search engine. or am I totally looking at this situation wrong, kinda overwhelmed here, P.S this is basically a small scale test, which ill be ramping up when I start building my portfolio website on web so I wanted to see how to get the SEO working in a smaller scale before I ramp up