car seats are meant to position the driver so the driver doesnt go to sleep. e.g. lets take my mercedes benz seats - they are not soft in any way, they have a spring chassis though - But they are nicely contoured so you can sit in it all day long.
OTOH, my chevy has soft seats - sofa soft but terrible back design - good thing its a bench seat at the front.
it seems that you are not liking the contouring of the toyota seats rather than softness - and I agree with you 100%, toyota has not made good seats since the 90s, even in the crown, markx, mark2, land cruiser etc - all of them are completely useless when it comes to comfort.
The website below are who make the seats you find in Pakistani cars
they also have sports car seats- but they are not sold in Pakistan anywhere.