Rustoleum rust remover.
Rustoleum rust converter.
I agree! Rustoleum.
Is it a vehicle you’re working on? Here’s what we used successfully with ours for the rust: https://www.frugalfamilytimes.com/2013/06/diy-rust-removal-make-your-beater-better.html?m=1
All rust converters use an acid, like tanic acid, to convert and stabilize rust. I like rustoleum rust converter simply because it is easy to find and has a nice rustic black finish
Rustoleum Universal bonding primer.
I agree: Rustoleum. If it is really rusty though you will need to go old fashioned with Sandpaper and gloves.
Brasso cream cleaner
I swear by rust-oleum on any outdoor items. It's what I used on this cute hanging pot I made over. https://www.girljustdiy.com/hanging-flower-pot-new-life/ the copper pot is still going strong and it's been outside in the rain for 2 years now.