u/Inevitable-Space7815

Hey guys. I’m a DIYer but mostly indoors and I am struggling with what I should do here. I have a garage the board on the outside of the garage that runs parallel to the length of the garage and also the sidewalk to the house is completely destroyed. Obviously the path is to replace it, but I cannot get it off of the house. Any suggestions? Here is a video

https://imgur.com/a/DbbwBMP