>>21472871 (OP)OP you posted bare bones frikadellen.
The result is by definition a burger patty by virtue of the meat used here is ground beef, and is shaped into patties.
It's missing spices and chopped onion at the very least. I make mine with minced garlic and shredded carrots too.
If you put this on a bun, it's a frikadellen sandwich, even if there's also lettuce, tomato, pickles, fries or whatever else you put on a burger. If you scoop roll it into balls they're meatballs. If you mold it into a log it's meatloaf. The only difference is most people add pork of some kind into the mix.
I suggest you shut up, stop being a retard, and reheat your frozen burger patties how you like. Leave cooking to neurotypicals with working imaginations