Start using OpenStreetMaps. The map is much better then GoogleMaps, I have GMaps only to check restaurant, which are not covered well on OpenStreetMaps.
1. Download https://osmand.net/
2. It's local first app, so you have to download the map of the area.
3. OsmAnd has a bit harder UI but there is so much features.
4. The important thing is to realize that you have multiple UI profiles (for car/war/bike/...). So you can set different level of detail to see and define for yourself what is relevant for you in given situation.
More tips in upcoming posts.