Only tip your server at restaurants and food delivery people, anywhere else is a scam. Servers and delivery people can be legally paid way less because they’re expected to live on tips, its shit but its how it works. If you don’t tip them they could have basically worked for you for as little as 4$ an hour. If you’re worried about amounts, just go for 15%, its the expected amount. Skip if they suck at their job though.
Nazi’s deserve to be named, shamed, and ignored.