Thank you for posting here in the Community forum, @mlowaedm-gmail-c. it's my pleasure to provide you with the information about your lost data.
Ensure that you are accessing the right company file. If you can somehow tell me what happened when you lost data, it would be very appreciated. Any additional details can help us narrow things down.
I've added these resources that'll help you in managing data please check our detailed guide here.
If you have other questions about managing your data, feel free to add a comment below. I'll be glad to help.
