is part of Google. Google is an empire which tracks you accross all it's websites (aka half the commercial web) and aggregates this data for complex behaviour analysis. Google holds tremendous lobbying power over the internet and the mere existence of such centralized power is problematic. The wrongdoings of Google would require a page of it's own.
is especially dangerous software as it tracks our location and places we go to. It is suprising the amount of stuff you can infer from someone's life with enough geolocation points. Home address, habits, relative wealth and level of education (based on the price of the neighbourhood, activites and workplace for instance), relationships (location of friends' houses) ect... Now imagine the kind of insane (invasive) knowledge you can mine when you have access to not only one person's geolocation data, but EVERYONE's geolocation data.
cartes. This is a project funded by the NGI Zero european fund. I previously used Openstreetmap directly as a replacement for Google maps but I was missing the public transports routing. cartes.app fixes that and is a full replacement (possibly even an improvement) of Google maps. That said you could use a combination of openstreetmap + a routing engine like transitous.