Can you elaborate more on why you like Kagi? Does it get very relevant results? Eliminate blog spam? Does it make the internet seem larger than a handful of apps?
I like how you can block individual sites from search results, prioritize search results from specific websites, etc. It's quite steep, but I feel it is worth it if you can afford it and are able to justify such an expense. For disclaimer, I don't currently use it because I can't justify such an expense but I likely will in the future.
I've been using SearXNG for the past couple of weeks, it pulls from most the major search engines like google, Bing, duckduckgo and qwant, but you can easily set it up to not show google and Bing.
For most things it works great, the videos tab isn't anywhere as good as Google's(even when it pulls from Google) but for what I need its great.
It will also strip links of tracking and stuff like that.