Searxng is self hosted and open source which pull results from other search engines. This means it can be effectively customized however you want and prevents a lot of cross site tracking but his less reliable then a standard search engine.
Kagi is a paid search engine which is privacy focused, has better customization but I don’t really know a lot about it beyond that
I’m running Duckduckgo on Brave browser. how much difference do these programs make?
Searxng is self hosted and open source which pull results from other search engines. This means it can be effectively customized however you want and prevents a lot of cross site tracking but his less reliable then a standard search engine.
Kagi is a paid search engine which is privacy focused, has better customization but I don’t really know a lot about it beyond that