Hi Phaedra, thank you.
The car I returned due to ill health was a 2019 Mazda CX5 Sport and I had it for about 18 months so have had plenty of experience of the seats . I am 6’4 , about 18st and found the seats to be extremely comfortable with good lumbar support. I never considered space/size to be an issue. Prior to that, I had the Volvo XC60 R and , if anything, found the Mazda to be better.
Hope this is of help.
Mosd