The proper way is to update the map database on the https://openstreetmap.org ( OSM )
via their online editors or extra OSM editing applications like JOSM (java) or Vespucci (Android).
The very important thing is being compliant with their site and data policy.
This would provide map update available for any map application using OSM data.
If you want to create your own private maps, it is possible, but much more complicated. For this, I would rather recommend to stay with trails being recorded tracks, independent on the map.
Sent from my Xiaomi MI A2 / Android 10, via Tapatalk
via their online editors or extra OSM editing applications like JOSM (java) or Vespucci (Android).
The very important thing is being compliant with their site and data policy.
This would provide map update available for any map application using OSM data.
If you want to create your own private maps, it is possible, but much more complicated. For this, I would rather recommend to stay with trails being recorded tracks, independent on the map.
Sent from my Xiaomi MI A2 / Android 10, via Tapatalk