I only know one camera that fits your description - it's AKASO v50 Brave
Costs only $ 101. The video quality in 4K leaves much to be desired, but as I understand it, you do not need it. And the video quality in Full HD is very good.
By the way, pay attention to Campark ACT74. If you are going to get acquainted with the world of action cameras and use it for yourself, and then show the video to your family and friends, then you will like it.