It used to be flying over such a long distance, ca 11 hrs non-stop. Flying from SFO to LAX or San Diego didn't count. I've become used to doing the trans-Atlantic flight. Having one piece of luggage somehow lost on the flight where it doesn't show up on the baggage claim used to be a concern but someone's luggage has to the first to be thrown out, just someone's luggage will be the last thrown out. My luggage is never among the first and luckily never among the last 10%, which makes you feel nervous already.
True, there have been times where getting a foreign language menu was a total surprise when it ought not to have been. In 1971 I was Malmö for one night, got to a small restaurant, was given a menu all in Swedish, obviously,....totally didn't count on or expect that. I first looked for cognate words similar to English or German. Obviously, the waitress didn't speak German or English, so I just pointed to a dish. The same happened in Prague in 1973, was given a Czech menu, but the waiter did speak German, still could not read the menu at all. I just pointed to an "expensive" dish at the bottom of the menu.
When I went to France the first and second times in 1973 and 1977, I could not read the menu either, minus a few words, basically zero comprehension. By the late 1990s I decided to study up, learn the important vocab needed to crack a French menu. Now reading a French menu is no problem as is ordering in French
Never had a problem reading a German menu or placing the order in German.
I've gotten lost so many times, on foot day and night, in cities and towns, but never was intimidated as to safety even though I was always alone when lost. Taking the trains in Germany, figuring the system from the first trip in Germany was easy, no problem, even when I went in a "wrong" direction but I discovered that by eavesdropping on conversations around me, so I got off at the next stop.
Taking the trains in France was not intimidating but did take a bit more getting use to, both the TER and TGV trains.
On eating alone...no problem at dinner in Germany or France. As most trips are solo, having dinner alone is part of it.