Where I live, I scan the items with my phone and put them straight into my own bag, then at the self-checkout I just scan the QR and pay through the app.
If you really need to use windows, but don't like 11, you can use the LTSC version, which also has less bloat and (IIRC) is supposed to keep getting updates until 2035. It can be downloaded and activated here.
Where I live, I scan the items with my phone and put them straight into my own bag, then at the self-checkout I just scan the QR and pay through the app.