For years I have been internationnally shipping wine bottles, individually bubble-wrapped and taped up, inside tough cardboard boxes, without any issues. Occasionally the TSA will open (and reseal) the box, and open (and reseal) the wrapping around a sample bottle, but nothing has ever broken. I contrast that with an early experience many years ago when a bottle of red wrapped up in a towel broke inside my suitcase.......
I always buy wine whenever I travel overseas and only had two break on me in almost 5m of flying so all things considered that’s not too bad.
I will note that I think the reason they broke was because security didn’t repack them as well as I did.