This reminds me of the joke about the “far from good” paint job, which is “good from far”. When I started working at my previous employer, I was assigned to drive a 1998 Chevrolet Express cargo van, which had the white paint peeling off (and lots of paint missing) from the hood and roof.
I convinced my boss to let me buy several cans of Krylon white spray paint, spray primer, and sandpaper. I then removed the hood, scraped off the remaining paint, sanded and cleaned it, gave it a coat of primer, let that dry, then two coats of white paint. I also scraped off the peeling paint from the roof of the van, sanded and cleaned the areas which had surface rust, primed and painted.
The resulting paint job looked dull and amateurish from close-up, but even from several feet away it looked decent.
The point of this anecdote is that if you want a paint job which will look flawless up close, you’re going to have to pay to have the car properly sanded and repainted. If you want something which looks good from a distance, you can actually clean up the paint with some ultra-fine sandpaper (600, 800 or 1000 grit) and then apply spray-on clearcoat, and then use 1000 grit sandpaper to “blend” it in once fully dried. This won’t give a professional quality paint job, but it also won’t cost thousands of dollars.