Cutting the cable, lets talk options and media setups

I have this one inside my attic but I couldn't get all the channels well. I am about 50 miles from the towers in my area. So I moved it outside with no issues at all.

https://www.amazon.com/AmazonBasics-Amplified-Indoor-Outdoor-Antenna/dp/B00MFXNQBU
Thanks.
Tell me about mounting it outside. What did you need/have to buy to mount it?
How did you ground it?