Get your taxes done using TurboTax

I'm new to this situation, just had a crash and came looking for info and found this thread. After my crash, I re-opened TT, which had an update requirement (which I did) and the "oops we hit a snag" pop-up  (yes I clicked report it) and when I finally got TT open again my return was gone. I had the Welcome Let's get started screen. 

OMG I am furious -- 

1) any way to find my half done return?

*** UPDATE ***   I searched my computer (This Mac) for .tax files and found "unsaved turbotax document .tax2020" and clicked it and it loaded up in a new TT window. So now my question is:

2) what steps should I take so this doesn't happen again? How should I save my work before I follow those steps?