I switched to duckduckgo last week and i am really loving it. I tried their browser but I was getting a lot of 'this browswer is no longer supported messages'. I think I will try brave next.
I did have one site which told me I needed to use Chrome, Edge, or Firefox to use their site. Which kind of made me laugh considering the engine Brave uses. It was a really interactive JS heavy training site, so I guess they really wanted to be sure the browser was compatible to avoid support issues.
If you're just trying new browsers to see what's out there and clean, I've really liked Orion.
That being said, I've used "Ask Leo" a handful of time, with mixed results. It's really good for "Give me the TLDR" or "Find the part of the page that talks about X".