I had a female ex racer. She came with her challenges, but for me was a lovely pet who I miss dearly.
She had been badly treated, so was extremely nervy which added a layer of complexity, it took well over a year for her true personality to come through.
She had never lived in a house before, and never did learn to do the stairs, which often meant sleeping downstairs with her (if there were fireworks or a storm etc and she was frightened)
She was frightened of pretty much everything we encountered on walks, so I walked her through the fields early on a morning when it was quieter, she wouldn't go out through the day or on an evening (flat refusal to moce, would just slip her collar and go back to bed). She was fundamentally lazy, so one walk of around an hour a day was enough for her. Couldn't let her off the lead, as she would chase rabbits and had ZERO recall.
Toilet training wasn't an issue for us when she was younger (adopted her at age 5), but was truly horrific to deal with when she became elderly.
She lived happily with cats and indoor guinea pigs, but would shred anything white if left unsupervised. The first night she obliterated two Mongolian fur style throw pillows. She also once got a 24 pack of toilet roll that I'd left in the hallway. Boxes of tissues had to be kept at a height.
She was very stealthy when it came to stealing food. I had to childlock the fridge, freezer and base units in the kitchen, and couldn't leave anything out, even wrapped.
Once she settled in, she was the perfect pet for me. So loving, liked to try and sit in my lap which was always fun as she was big for a female. She was usually calm, liked a quiet life, but would get zoomies when listening to Flight of the Bumblebee.
A lot of the negative behaviours I could likely have trained out of her, but she'd had such a horrible start in life, I chose to just leave her be. I lived alone at the time, and was unbothered by the compromises.