lost everything two times

After two weeks, i connected again and my project has just the half of the segments..

I did everything again, then at one point i cut one segment in two. then delete the segment i didn’t want and i guess everything was selected or idk but everything disappear.

i was 5 hours working on it..

i won’t try again, i don’t have enough time to lost.

At least until there is an undo function..