My Brother welded up an antenna mount to a stainless steel plate joined by cables to another stainless plate. They saddle the peak of the roof and are easily adaptable to almost any roof peak since the cables between the plates allow for movement.
We put the mount up yesterday and put roofing cement under the plate holes and then used 2" lag screws to hold the plates to the roof. This is a tall 2 story home so my much-less-fatter-than-me Brother actually mounted it while I shouted encouragement. I just ordered this antenna.
https://www.amazon.com/gp/product/B07KYXJWRC/?tag=atomicindus08-20
I already used one of these antennas and liked it so I bought the same one again. Now I just have to remove the DishNetwork dish mount and another antenna mount off the front of the roof.
I also have to decide whether to run the coaxial cable up the side of the house or go through the attic and come out that nearby roof vent. It's awfully hot up there in the attic with the sun beating on the roof. If I go that route I'll do it early in the morning or wait for cooler weather.
Dennis