Personally, I dislike the Google undo feature. I don't know how it works. The pull down is small and vanishes after some seconds. And then? I am still to late

Personally, I dislike the Google undo feature. I don't know how it works. The pull down is small and vanishes after some seconds. And then? I am still to late and feel even more sorry for myself (double fail) On my systems I have undo of the file system under control. snapshots. I'm using it since years. Saved me twice! I recommend this all the time ... (I know it's not for everybody)