Still say people should borrow a cheap compressor, buy a cheap harbor freight gun, and spray it inside a garage.
Single stage paint is crazy cheap and you get much better results.
Here's one I did like two years ago.
(Dirty as fawk here)
But, yeah. Car was done in a dusty ass garage, a small 17 gallon compressor, cheap paint gun, and with shitty tools.
For DECENT results, all you really need is a couple of sanding blocks(also cheap), a buffer, and a tiny bit of patience.