Just read a perfectly fine fanfiction that took place in Germany but something that stood out to me was a chapter where the characters walk across a field and is approached by the farmer yelling at them to get off his land.
I’ve come across this plot point a few times and I feel like it’s worth telling writers that most of Europe has some version of Right To Roam. The laws aren’t the same in every country but generally you’re allowed to walk and rest on private property like fields and forests so long as you don’t destroy anything or leave trash, but not gardens or fenced in areas. The owner of the land might put up a sign asking you to follow certain guidelines like no horses or keeping your dog on a leash but but there’s no real repercussions to not following the rules besides the owner eventually fencing the area off so people can’t enjoy it anymore.
I’ve personally walked around on a field while the farmer was harvesting potatoes with his big ass machine and collected the leftovers while my dog was trotting calmly besides me and he looked straight at me and didn’t care one bit because Denmark also has an old tradition of letting people collect what’s left as a form of charity (for my fellow Danes, that’s what “vi rev marken let, det er gammel ret, fuglen og den fattige skal også være mæt” means in the song Marken Er Mejet)
The very north of Europe like Norway and Sweden even give people the right to put up tents and camp on other people’s private land (except gardens and such). Again, the laws vary from country to country but as a rule of thumb you have more right to roam the further north you go and less the further south but if you want to write in a specific country look up the laws there.