In some of my past posts about camera support brackets, some of the brackets have been of the bent dog-leg type. I did not provide any instructions on how to make them. The brackets are a single piece of material cut in the shape of a dog-leg and then bent to a compound angle to achieve a specified vertical and sideway aiming point for the camera. An engineer-type person would probably solve this problem with vector math or trigonometry.
I am going to show you a what-you-see-is-what-you-get-approach. You will only need basic craft tools.
The next 12 pictures describe in detail how to make a dog-leg camera bracket.
In picture 9, I bent the 1/8" thick polycarbonate with a 3.5" door hinge in a vise. A sheet metal fabrication shop could also bend it for you. This plastic is tough. It can be bent into a u-shape flat up against itself without breaking. Or you could use thicker material and use compound miter cuts to assemble the bracket parts with glue. That is going to be my next post.
As you can see, this is a very simple-looking camera support system.