Ivan, I looked over your edits. Looks great overall! In general, the suggestion I have for you is to increase the detail in geometry of the roads you added. I recommend against directly converting GPS recordings into OSM features. In most cases, some manual cleanup is required to get a gpx file up to par.

Regarding service road vs path classification, the line is somewhat blurry, but you should consider things like typical vehicle vs pedestrian use, ownership, purpose, and surface maintenance (or lack thereof). Let me know here or in a DM if you have any other questions. Thanks for your contributions!