DuckDuckGo uses the bing index/backend. I’ve had it as default for 5-8 years. Probably once a day I’ll add the !g to pop it over to Google. Works great. I search a lot, many different types of queries. When I pop over to Google it’s usually a Boolean query looking for a needle in a haystack (that one comment somewhere where someone is using the same combination of two or three rare items together).