This is probably the best resource for keeping track of which search engine options exist and what their quality is like: https://seirdy.one/posts/2021/03/10/search-engines-with-own-indexes

For a "fire and forget" option that doesnt require any configuration you cant go wrong with good ol DuckDuckGo: https://duckduckgo.com

If you're okay with dealing with more configuration and breakage then Searx can be pretty powerful as its a metasearch engine that can search with every search engine you tell it at once and agregate the results(while proxying things to maintain privacy): https://searx.space (had decent luck with the https://search.sapti.me instance if you just wanna try it out without searching through a list of options)

Also all search engines are kinda bad due to SEO spam and "AI" generated images and articles polluting the results, consider using uBlacklist to help you filter out the trash from search results(think of it like ublock origin for search engine results), can use it for basically any search engine so no reason to not set it up: https://github.com/iorate/ublacklist