Wanted: Looking for large breed type dog. PURE BREED OR HYBRID. for sale in Sturgeon Falls, Ontario

Hi everyone, my name is Jasmine and I am looking for a dog related or of the fallowing breed or hybrid.
-Neapolitan Mastiff
-Dogue de Bordeaux( French Mastiff)
-American Bulldog
-English Mastiff
-Olde English Bulldog
-Rottweiler
-Etc
NO Boxers. I find the breed to be over populated.
Prefer a female as I would like to breed her just once and also prefer a puppy.
Not looking to pay large fees, would be willing to give the breeder pick of the litter when I breed her. Will take Neapolitan Mastiff, English Mastiff and Dogue de Boudeaux of any age under 3 years old. I am not a back yard breeder or anything like that. I just love those breeds and would like to get a female and let her have one or two batches of puppies so she can get the taste of mother hood.. Must have shots. Will not take the dog if it is neutered or spayed as I have doing that is kinda mean because that should be theirs unless they have like a massive problem "down there".
I have lots of experience with dogs as I've owned the fallowing breeds before;
-German Shepherd
-American Bulldog
-Staford shire Terrier( Pitbull)
-Chow-chow/Wolf x
-Beauceron or Rottweiler/Shepherd or Rottweiler Dobbie x
At the moment we own a German Shepherd and a min pin/chihuahua x
Both are good with other dogs but we are now re homing our German Shepherd because she is a liability to us as she needs to be on the farm or on a car lot protecting, doing her job. Her parents were cop dogs and it's now been passed on to her I guess. She's always been like this. When we got her at 7 weeks old she bit everyone who tried to pet her. She's changed from that tho. Now she loves her owners and anyone she can warm up to.
We love her dearly but we can no longer take the chance.
Anyways the dog must be at least a little good with children and other animals, strangers no worrys the Pitbull didn't like strangers and it took her at least half an hour for her to quit snapping and snarling but once they'd play with her she was their best bud.
If you have what we are looking for please email or text ONLY
Thanks :)))
Would like pictures as well. If you're interested in our German Shepherd please let us know. She's gonna be 12 months in December. Pure breed. Awesome dog. Message me for more info..