In the past few years, we have covered plenty of decent iPhone filmmaking cages and rigs here. Many of them should work with your iPhone 13 but some require minor modifications. The Ulanzi Metal Cage for iPhone 13 doesn’t have that problem. It comes with two adjustable handles for more stable shooting.
This iPhone 13 video cage comes with multiple interfaces, so you can easily attach your microphone, lights, and other gear. It supports horizontal and vertical shooting. This rig weighs 245g, so it is easy to carry around.[where to get it]