As a truck driver, which European language is best to learn

id learn French. iv a bro who lives over there he couldnt get to grips with the lingo at first but got it after face to face tuition for a solid week. Id wager you could even end up living there ,once you are fluent ,Altho bro had a nasty first marriage did you know after divorce in France you have to keep paying a settlement to your ex for life? hes remarrying again soon and seems happy nobody works like a dog in France and proper time off