“It’s true that some people don’t tip while others tip more. “
Then why did you post that everyone tips $1.
It was just a suggestion. The point is it adds up. If you're worried about bribery, put the tip jar or bucket or whatever before or after the belt so the security agent doesn't know who chipped in what. The point is, at the end of the shift they will have made money for showing up for work even if they didn't get a psycheck.
Once this nonsense is over, things can go back to usual crappy unfriendly service.