Check whether the site is indexed
Use Google's site: search operator as a quick signal, then use Search Console for the authoritative view of indexing and URL inspection.
Check crawlability
Make sure robots.txt is not accidentally blocking the site and that pages do not contain an unintended noindex directive. Important content should be accessible without requiring client-side actions that prevent crawlers from seeing it.
Publish a sitemap
A sitemap is a list of the URLs you care about. Submit it through Search Console and keep it current as the site's important pages change.
Build internal links
Link the homepage to important pages and make sure articles link to related pages. Google commonly discovers pages through links, so a well-connected small site is easier to explore than an isolated collection of URLs.
Promote the site naturally
Share useful articles and projects through genuine profiles and communities where they are relevant. Discovery and references from the wider web can help a new site become part of Google's crawl graph.
Give it time
Search changes are not instantaneous. Google notes that some changes can be reflected in hours while others can take weeks or months. Measure progress over time rather than changing everything every day.