You're correct, you're not at school, you're at work. Quit complaining about something you agreed to when you got hired

At previous jobs I’ve had to buy my own uniform and I was not provided one even though it was required. And as far as I know we do get shirts for free sometimes. I remember every store got BLM shirts last year and I’ve seen partners who’ve worked for longer than me wear pride shirts or nitro shirts that I also believe was sent to stores and were free. If you’re getting dress coded a lot just wear a plain black t shirt every day. It’s not that hard. They’re not technically doing anything wrong by actually enforcing the existing dress code which is already pretty lenient in and of itself.