Criticize Google Maps all you want, but it is easily one of the most useful apps to me, especially as someone who's been been living nomadically the last 5 years. It's kind of scary how dependent I am on this app. Anytime I need to find a restaurant, dentist, electronics store, etc. - I'm looking first on Google Maps and my life is basically dictated by the results.
I have lists like "Places to Work" which is a list of all the nice coffee shops and places I like to work out of (currently have 200). I star hotels + AirBnBs I'm staying in, and bookmark a ton of things. I rely on it for public transportation. If I could only pick 3 apps on my phone, Google Maps would definitely be one of them.
I do wish there were better alternatives and I hate being overly dependent on one company. Unfortunately the open source alternatives like OpenStreetMap don't really even compare.