No, you would hire an artist or more specifically an illustrator.
So your first mistake would be hiring a graphic designer.
Your second would be spending 1000s when many are happy to take less if the job and conditions are right.

Source: artist AND graphic designer here.

You're part of the problem and a paradox as well. Would you enjoy it if I fed the text of your novel to a LLM and told it to make me a novel based on it?
But also, finding a cover illustrator wouldn't cost 1000$ for a book, yeesh. Were you paying for someone using only Apple Products or something?