A single footstep on loose gravel: a soft heel thud with a scatter of small stones under it. Use it for walking scenes, game characters, podcasts that need a bit of movement, and any place where a person should sound like they exist.
heel: sine falling 178 Hz -> 58 Hz over 60 ms scatter: white noise 130 ms, high-pass 1.8 kHz, with 6 random grain hits between 15 and 110 ms envelope: 1 ms attack, 55 ms decay on the heel, 110 ms on the scatter