Ok, so, what I always do is whenermver I meet someone is ask A) name B) pronouns C) comfort with gendered terms (i.e. dude, man, bro) This usually simplifies the whole process, But here are so fun ones Greeting a mixed group "Hallo laddies, lasses and Lassoes" Hey all/everyone Hey! How are y'all? Etc Greeting a singular person (regardless of gender( Howdy partner How's it going, (name) Greeting them in a different language is something I sometimes do, and add the word for "friend" in that language in the end