
Hi Aubree. Mount to your body instead of the bike so your torso and arms act as a damper. Chest, chin, or helmet usually beats handlebar or frame. Keep the camera close to the mount and avoid long extension arms, and tighten all joints so there is no play. Add a thin rubber or foam layer at the clamp, cinch straps very snug, and use a short safety tether. Center the weight and set angle so the horizon stays mid frame when climbing or out of the saddle.
Enable electronic stabilization and horizon leveling, pick a higher frame rate like 60 or 120, and if possible use a faster shutter and lower ISO to reduce motion blur. Try a narrower field of view. On the same trail segment record short clips with different mount points, strap tension, and settings, then review on a larger screen to choose the smoothest setup. Slightly softer suspension and a bit lower tire pressure can cut high frequency chatter. If your camera records gyro data, add a pass of post stabilization.