On iOS, I set my default search to DuckDuckGo, and enabled Hyperweb on the DDG domain to redirect to SearXNG. I use a Google Images bookmark saved as a favorite when I need images (SearXNG results inferior even when using Google as the sole engine).
I anecdotally suspect Kagi of astroturfing btw, but after some free trials it seems to be about the best Google alternative - gotta be [earning like] a [US-based] knowledge worker though, or really care about search.