All tabs randomly have been deleted

In all of the responses found on Google, nothing can help on my computer. For no reason, after two years of using this extension, all of the 7,000+ saved tabs including important legal work, help for my homelessness, and health information, all has disappeared. In response to one person you said you can restore it for him, perhaps you can help me this way as well since none of the posted methods appear relevant to me?