SEASKY [ 2Pack A1 Flexible Adhesive Helmet Mount use Genuine 3M for GoPro Hero13/12/11/10/9/8 Max DJI Action 5 Pro 4 3 Insta360 X5 X4 X3 Ace Pro 2 Sports Camera Accessories Flat Curved Surfaces

Just get an adhesive GoPro mount. No drilling and no worry about the 3d printed plastic breaking from the leverage of the camera/ wind force at speed. Plus easy enough to remove without damaging or modifying the bike. One like this, https://a.co/d/09RVOBY9.