Depends on what you search for in which language and region. For technical stuff in english DDG mostly suffices, otherwise WP. For businesses, restaurants, club

Depends on what you search for in which language and region. For technical stuff in english DDG mostly suffices, otherwise WP. For businesses, restaurants, clubs, general venues Apple Maps or Google Maps as fallback, depending on region. For pure maps, bicycle routes, pedestrian shortcuts OSM, depending on region again. There is no universally usable map.