Start here by deleting everything Google thinks it knows about you.
https://www.theverge.com/24141741/google-data-delete-how-to
Then pick up with my tips for Google free living.
https://www.optoutproject.net/the-best-non-google-search-engine/
It’s so much better out here without a data-sucking behemoth controlling everything you see, flooding your search results with spam and injecting the internet with LLM-generated sludge. Bonus, if you leave, your data stops contributing to serious ethical problems.
Thanks for @Em0nM4stodon for passing The Verge’s How To along.