>>7144888Arabic, it's a good langue if you want to visit Germany. All jokes aside I unironically plan on laerning Arabic for a couple of reasons.
As for your question do you have relieves living abroad or like taking vacations in certain countries? Choose base off this.
If you want me to throw some random suggestion then I dunno how about sign language so you can fuck a cute cripple. Note their's different types of sign language depending on the country.