I use startpage which is a google proxy. So, it does what duckduckgo does with bing but with google instead. Searx is also a great option. Neither have their own crawler though

As for the brave engine there's nothing inherently wrong with it. In fact, I'd argue it's much safer than google, bing, or the proxies of each. While proxying you can still be fingerprinted. With brave only brave could do that and I trust them not to more than most.

You should be cautious though, as brave has had some privacy issues before injecting affiliate links which would track you when going to ecommerce sites.

Of course, the brave CEO is a piece of shit though. Full on covid conspiracy lab made Fauci plandemic ivermectin type stuff, believes that gay marriage should be illegal while donating to anti-gay orgs, and otherwise uses his position to further far right ideas. He also tries to fund weird micro nation projects with the goal of creating anarcho-capitalist heavens in the ocean. Think bioshock, but crypto bro. All around weird guy

All this said, I'd still argue from a privacy perspective brave is a perfectly reasonable option. The company has one privacy controversy but that's better than the big two. I'll stick to startpage though for political reasons, until I find something with good enough results that's fully independent and moral. Currently looking at mojeek myself