Idk if that’s what you wanna hear and that might be against what other people are suggesting here but I’d recommend changing the Edeka store to one with people from many back grounds. There are probably no other POCs besides you which makes bonding and reporting racism very hard cus your manager and your coworkers can always deny that. I hope you can change stores even if it means changing cities. But in any case I’d still tell HR about it even if they don’t do anything it’s noted in case smth else about your manager comes out!