Go to your GSC account and use the URL Inspection Tool to submit each page on that site. It’s a fast way to determine whether Google knows about those pages, or there could be an issue. If it’s not included, simply press “Request Indexing.” Every now and then, magic happens! Wait a few days after you do this.
Just check that you’re not being timid on something small:
Is your site up and running with people able to see it? (If your site does have a “Noindex” directive, or if it is password-protected, Google won’t index it.)
Did you accidentally block bots with that robots. txt file or meta tag? You can experiment with this in Search Console.
Your content should offer value. Even if it’s a simple site, I would ensure the content on your pages are unique and not copied from elsewhere.
15 days can feel like an eternity but sometimes it takes a little while for Google to notice new sites. To expedite the process, consider making some small signals around your website:
Post about it on Twitter, Facebook or LinkedIn. Once people start showing up to your site or clicking through to the link, Google’s more likely to take notice.
Drop links to your site in appropriate forums or communities (but be sure you’re being helpful, not spammy!).
You can also make a blog on your site and post new content often, which will eventually bring the ‘crawlers’ back to your site.
This is fancy talk, but it’s friendly to you! Leverage free "link pinging" services (such as Pingomatic or my favorite, Pingler) to push tiny signals to search engines that yes, your site and its pages do actually exist! It’s not a miracle solution, but it can prod crawlers to pay attention.