I have spent 7 weeks here in Germany and I can confidently say that at no point did I have any kind of grasp on which direction the traffic was coming from.
Even the roads I was using every day, I would go to cross, look the wrong way and then cringe inside. It was basically the equivalent of setting a flare off that said: “I’m a tourist!”
It’s left. Look left for the traffic.
Unless you’re on a one-way street.
Unless there is somebody riding a motorbike on the path.
Unless you’re at a crossroads.
Good luck, I guess.