There is something to be said about building tools out of kindness and not for greed. Thank you for your contributions to OSM and Thank you OSM developers too - big fan and user!
I work in public service and I've grotten so many people on board that the map in my region is pretty darned good.
Keep in mind no changes are made until you commit them using the 'Save' button at the top right of the map area. You also have 'Undo' available. You can also make changes to your line before saving. Right clicking the line or one of the nodes on the line will give additional options (such as being able to continue drawing your line).
Hit 'Save', add a descriptive Changeset Comment and add your source (usually aerial imagery).
If the trail is tree-covered and not visible on the map, you may have used GPS to record the track. In that case you would want to use something like the JOSM desktop editor that has more capability. It can import GPX files, etc.
[0] https://streetcomplete.app
Lets say you are building a delivery robot. You need not just situational awareness with LiDAR, but also a map for route planning. Will Google give you access for such technology if your innovation is a direct competitor?
If its not a delivery robot, but firefighter robot?
[0] https://www.eff.org/deeplinks/2013/05/google-abandons-open-s...
[1] https://wp-events-plugin.com/blog/2018/07/17/google-maps-api...
I build and maintain trails for hiking and mountain biking. We build a new trail or change a route and I can just put it in OSM and off it goes into all the other systems. And then I can pull the data back and use it to make maps for planning, signage... whatever.
Google you just give them data, in their format, without all the nice OSS tools that have developed around OSM and... Let them use it. I'm wholly uninterested in contributing to Google, most especially because the barrier to entry is so high.