If it's more of an agricultural track, then it would be better to tag it as such (highway=track, tracktype=... https://wiki.openstreetmap.org/wiki/Key:tracktype ). That way, it's allowed for pretty much anyone.

Tagging "this is a pedestrian road that bicycles are also legally (bicycle=yes) permitted to use" is something quite diffferent, e.g. this: https://mapy.cz/zakladni?pano=1&q=ruzynska&source=stre&id=119552&pid=96206140&newest=1&yaw=0.842&fov=1.468&pitch=0.340&x=14.3211709&y=50.0813739&ds=2&z=16&ovl=8

The expectation of highway=footway,bicycle=yes is "paved, separated from motorized traffic." highway=track is, without other tagging, "unpaved, free-for-all".

Retagged this.