My images don’t show up on my documents now.
is it safe for us to assume that you have already tried clicking on Images ON? Please tell us what else you clicked on that might have caused this problem. Also please Edit your question to include your Operating System and the version of LibreOffice.
And where do I find Images ON? Windows 10. And Libre Office 5.4.7.2
Perhaps it is in or near the same place where you found Images Off, wherever that was.
Do you mean VIEW > IMAGES AND OBJECTS? On my Linux/Mint system this TOOLS > OPTIONS > LIBREOFFICE WRITER > VIEW > DISPLAY > IMAGES AND OBJECTS. Deselecting this will stop the images from displaying.
Also directly from the top menu >View then toggle (select or deselect) “Images and Charts”