Computer - technical problem

Working on some documents with the home computer,
carefully save them and almost the time to finish,
have a final check,
since not quite familiar with the function of zip files......
by the time to check it again,
all the new saved files are lost,
try to check if they are in somewhere eles,
but - I have to face the reality,
all my work as well as my effort has gone,
I am a little bit unhappy about that !!!

Though,
need to re-work again,
what a big technical problem I have today!