Hello @Vivian_Russell0288,
I'm sorry to hear about your experience. Could you share more details, like the version of the OS/Illustrator installed, and if Illustrator behaves this way with specific files or when saving files to a particular folder location (internal/external/network drive or a cloud-synced folder like Google Drive/Dropbox/etc.) so I can better assist you?
Also, try saving your files as a PDF with Illustrator editing capabilities or as a Cloud Document, and share your observations.
Looking forward to hearing from you.
Anubhav