Airlines staff new in bali how to meet new friends here ?

Where are you located man? I just know there is a school for flight attendants near by here.. You will definitely find somebody with similar interests there. Probably you will be able to learn/teach language as well so your chances of finding friends here will rise even higher.
Me and my wife are staying at Tukad Barito (Denpasar), and the school for flight attendants is
...>>>
(BATC) Bali Aviation Training Centre
Jalan Tukad Barito Timur
(Renon, Denpasar Sel., Kota Denpasar)

Hope you meet some nice people here man,
it is definitely not difficult, just approach anybody who looks friendly and
doesn't look like a guide or like he wants to sell you stuff.

My wife is selling food here, so I wouldn't ask you to drop by to not make you suspicious