If the search engine does not see your site at all, then it is possible that it is either still in the so-called “sandbox” or got there again. My advice is to give it to a decent SEO company for promotion, redesign if needed, and rent a server in a more reliable server room.
For example, we rent in server equipment https://blueservers.com/ and find a normal hosting. And work out all the main basic content of the site before the promotion begins.