The other solution would be moving to a third European country you both are interested in, if possible.

Otherwise, I'd say it's time for you to go home and also that your relationship is over, even if you don't end it now. Long distance generally doesn't work unless it's a much longer, stable relationship and the distance has a concrete end date.

The fact that France is your only option to be together, and you hate the idea of living there, is also a sign that maybe the relationship isn't quite strong enough to survive long distance.

Does he want to live in the US? If not, what's the end goal here? You two stay perpetually in a long distance relationship?

You've been here (I'm also in Germany) two years and have had the chance to see how much better life is in Europe. If you still want to move back to the US, knowing how awful work-life balance, politics, etc. are there, then that gives you your answer. It's time to go back.