My cycling camera is a very small, light Canon Elph model and, since I am reclined on recumbent bikes, I often use a Bowers neck strap for it - the camera kind of rests on my lower chest while riding. When the rear admiral decreed that I shouldn't be captaining one-handed I got a couple of handlebar mounts from amazon (similar to this; https://www.amazon.com/iSportgo-Brac...+for+handlebar) which work pretty well for a light camera. Set up to shoot straight ahead. Only requires a couple of finger pushes. Note: A friend got one and it broke with a larger camera.
Sometimes I get a usable image.