What should I do if I travel with a group in Europe and have a self-catering meal, but my English is not very good?

Before eating, you can ask the tour guide and ask for good recommendations around the venue. Or you can collect tour guides in advance and ask about the tour guide route. If we can have a simple basic dialogue, there should be no problem. If you really can't communicate, ask if you can speak Chinese ... And if there are restaurants around the scenic spot, there will be some people from China, so don't worry too much.