You can see the link I posted (https://youtu.be/Vsj0vK8LjVk). To my eye it makes it more clear that it is just a dude walking like any human in a costume would.

I don't recommend it, but there is an image-stabilized Zapruder film out there that makes the Kennedy assassination a good deal more shocking/gruesome. You've been warned.

What if Bigfoot just happens to walk similarly to how people in gorilla costumes walk?

I mean after all.. Bigfoot is a humanoid..