Mojeek has improved a lot in last times. Is a good alternative, but always good to use several search engines for different tasks, all they have its + and -, eg Startpage is good for image search, Andi is fine for semantic and concept searches with excelent summaries, Mojeek and Qwant for general websearch, etc.- In the Vivaldi forum you can find the, maybe, most complete list of search engines out there which you can test (all include the needed insert code to add these direct to the list in your browser - 19 page thread)