The shape if the back of my seat causes bad posture because of the intended crease in the middle, is there a way to have it shaped where the crease is towards the top like some other vehicles have?

What is your question?

On a cargo van I once drove, the lower back of the seat was straight(ish), and the slight angle (crease that's indented) was higher up where the shoulder blades rest. On my corolla, the angled crease is in the center, causing the middle of my back to bend and hunch over. I was trying to look for some sort of seat cover that would reshape it to the comfortable type of seats I like so much. Do things like that exist? And if so, what do I search for? (Because the only results I get are basic seat covers or braces/cushions of various types, no matter what o search) I'd even be willing to buy an entire new seat if that were my only option/possible lol. Please let me know! Thanks so much! -James