@ihavenoname Unfortunately, you haven’t given enough information for anyone to be able to say much. To make it worse, it could just be that you’re experiencing a known issue as discussed at NOTICE: Unexplained Data Loss Issue. All I can advise is to check that topic as linked and provide information there.
** SIDE NOTE**
For future reference, please check out Creating Topics.
It can also be beneficial for you and others if you spend some time to Search Before Posting. You may see some things that have helped people before, but then might also have seen that topic I linked at the beginning of this post.
Sorry you’re having issues. As stated, definitely not able to help with no data. Just would have nothing but a lot of questions and guesses.