> Google's location service improves location accuracy > by using Wi-Fi, mobile networks, and sensors to help > estimate your location. Google may collect location > data periodically and use this data in an anonymous > way to improve location accuracy and location-based > services. > > Turning this off will result in your device only using GPS > for location. This may impact the accuracy of location > used by apps such as Maps and Find My Device.

Based on that description, that should turn off the data collection, although it can also make GPS fixes take longer, and there may well be other apps collecting this data as well.

If you want coarse location to work but don't want Google to know it, try microG with a non-Google location provider (I use Apple and Mozilla and it's pretty good).