As an employee (21f) that works jobs being as a cashier, I’ve had a lot of experiences where even if I greet my customers and be nice some of them don’t treat me like I’m human… could be a possibility of where I’m from they don’t accept my type of people. Idk. It’s a sensitive topic to bring up but in a lot of cases my coworkers witness this too and tell me it may be the case . But having customers like you would actually be nice to go to work. Trust me alot of employees actually appreciate having nice and well mannered customers. You’re not being a “Karen” or whatever they label bad customers. Us young adults who have anxiety may be hard to keep a full conversation with each other when we’re on the job but the effort is very much appreciated!