If you wanna see bigfoot or a dogman, go research the stories about them and find a hot spot near you.. Drive to it, and camp out for a week.. You won't get camera footage of bigfoot because they actually have extra sensory abilities to detect cameras and electronics.
Dogman on the other hand.. You won't live to tell the tale most likely.. The government has special operators set up in every state to deal with them and they cover it up because the fact humans aren't at the top of the food chain would scare the shit out of a lot of people.. Plus, people would never give up their guns and most likely would never go camping without an arsenal..

There is too many people with stories and encounters to ignore or write off cryptids as bullshit.. I seriously doubt 1000s of people got together and just sat around making bull shit up..