Trying to find a search engine that actually just searches for what I type, and respects the modifying operators I use. Need to do a lot of exact searches, but Google gives shopping and does not respect search terms.
If you need to do exact searches, almost all search engines will do so if you put your search terms within double quotes, e.g.
"search engine". They become more deterministic (or at least less reliant on personal data) if you use a private browser window, and a VPN may help too.
Otherwise, I'd recommend DuckDuckGo:
because there is no search history on DuckDuckGo, you escape the filter bubble of manipulated results.
A search engine cannot be completely deterministic: web pages are continually indexed, so if a new page is created (or linked to more often), which fits your query better than older results, search results will change.