Why some components and content disappear?

Hi triwra960106, sorry for your trouble! Please check your version history, and see if you can restore a previous version. You can follow the steps in the Help Center article here: https://help.figma.com/hc/en-us/articles/360038006754-View-a-file-s-version-history#h_01HAW5W5YMRQRYGJMX4KGC7MEQ

If you are not able to find a previous version to restore it, I would suggest you to reach out to the support team with a copy of your file (and share it with support-share@figma.com) so they can have a deeper look at it here: https://help.figma.com/hc/en-us/requests/new

I tyred previous version was no problem. Thx!