Chill Tech Bike Camera.
If you are looking for a basic camera which is not going to cost an arm and a leg then have a look at the bullet camera from Chilli Technology ( https://chilli-tech.com/content/new-bullet-action-camera/ ). It is a bit fiddly to set up and is best just as an insurance for when someone pulls out in front of you. You do need some computer literacy. Battery is said to be 4 hours. Memory depends on which micro SD card you fit, not included. The mount is a bit flimsy. Price as at Jan 2022 is £43.00. It has fallen off once, because I hadn't checked the mount, but was not damaged. I'm quite happy to lend you one if anyone is interested. Dean