My biggest problem with any gmaps alternative is the missing ratings option. So far I only found mapy. I am very happy with the app but wanted to check if there are any apps that might also be worth a look. Gooing in a restaurant without looking at ratings is a bit to adventurous for me.
You won’t find apps that provide the same service as permitted by the entire Google ecosystem. That would mean that they are as intrusive as Google and you wouldn’t be willing to use them. You either choose convenience and you can keep Google or renounce it a bit and use one app per function.