Those are some tough reception conditions.
'Go big or go home' applies in this case. You'll need to mount a large UHF antenna above or clear of trees and nearby buildings.
I would consider the Antennas Direct 91XG or DB8e or perhaps the Winegard HD9095P.
An Antennas Direct PA-18 preamp would also be needed.
Then, you'll need to consider a rotator.