Pickup an old used doghouse for cheap/free on Craigslist and place it prominently in the front yard. Get a huge water bowl and an old flattened soccer ball (chew both items up with the claw of a hammer) and place them next to the doghouse. Get one of those "CAUTION DOG WILL BITE" signs and post it.

https://www.amazon.com/Caution-Security-Protection-Warning-Surveillance/dp/B07P1DN4QL