Six relevance improvements, a graceful fallback when the cluster is down, and a quiet failure mode where the indexer reports success but indexes almost nothing.
Most of the 404s in Search Console want leaving alone. Which ones actually matter, what to do with discontinued products, and why a soft 404 is the one genuinely worth fixing.
You are not going to outrank the big players for the obvious term. Long tail phrases are where a small site actually competes, and they convert far better. How to find them free.
The SEO fundamentals are not complicated: mostly things you do once, properly, when you build a site. Including why the old advice about blocking search engines in robots.txt is now wrong.
Register a domain and the emails start: submit your site to hundreds of search engines, for a fee. It is a scam, the submission tools they claim to use no longer exist, and here is what to do instead.