Qantas don’t have any 777s (or any 777 orders). I think that going so hard on the A380 and never getting any 777s was one of their biggest mistakes. Now they’re doing better having cancelled their remaining A380 orders (after they got 12) and have started using the A330 on some routes with smaller demand and have finally got their first 787.
That, and their Emirates alliance have finally turned things around (they weren’t profitable internationally for several years until about two years ago).
What do you mean "started using the A330" ? It has been Qantas's go-to medium-haul airliner more than 10 years, long enough they they've all been refurbished recently with "A380 like" interiors.