Driver's side seat on 2010 Malibu

I just bought a beautiful white 2010
Malibu I did not inspect it thoroughly
and the driver's seat sinks way down
where your rear sits and it hurts my
back. Have back injury from motorcycle
accident every time I drive the car my
sciatic nerve and back is killing me
there is a definite dip down in the seat I
laid a towel over it and a piece of foam
and it still hurts I thought it had a power
seat because it had a lumbar button
and a button to raise and lower the seat
I inquired about converting to a power
seat between buying a seat and
installing is over $500 cannot do that if
I cannot find a Malibu seat is there an
alternative seat that would fit the
driver's seat if I also by the tracks if I
cannot get it fixed I will have to sell it
and it is so beautiful