For my job and work. I use Kagi. Its not free, but the search returns are very good, you can filter domains out from your returns, it supports custom “bangs” ala duck duck go and theres no tracking of queries. There are also specific filters for things like programming, or recipes for cooking etc. Theres also no ads, you are paying and are the customer. They are trying to establish a sustainable model to run on that allows for privacy.
I find it quite refreshing. It isnt free and I generally hate subscription stuff, but this is easily one I dont mind as it pays dividends often when searching for work.