I am American and I have dated someone who is British, someone who was Russian and I now live in Germany and I have gone on dates with German women. What I will say is that cultural differences can be hard, and language barriers can really make those differences feel insurmountable. There were challenges in each relationship. I found the Russian woman I dated was very blunt, and that was really hard for me since it felt like she was criticizing me a lot, but she did not see any issue with using direct language.

I also have had a hard time dating German women, I'm not saying anything negative about Germans or Germany because there are wonderful things about Germany, but Germans can be rather cold and, again, are very direct. Germans like to say that a German friend is a friend for life and view American niceties as frivolous and fake. Germans tend to see themselves as more authentic in this regard, maybe, but having to "prove" yourself worthy of friendship (or just basic friendliness) is draining, esp when you are an expat. So, for me, I think I would prefer to date another American or someone from a culture more similar to mine, but of course, if I met the right person then that may change, lol.

And these are just my own personal experiences, I don't think they are representative of any country as a whole.