I tried many products.
if its from your water you have to put an inline mineral removal filter in..diy doable, but best if a plumber is used.
Here's an article that might help you. I've had good luck scrubbing with baking soda and spraying on vinegar but if that didn't work for you, here's what worked for someone else. Wishing you the best.
Have your tried CLR Rust remover?
If you haven't tried WD 40, give that a go. leave it to soak a bit before you wipe it off. (It eats rust)!
CLR, if you haven’t tried it, should do the trick.
I've used Bar Keeper's Friend or CLR.