Hi @Corrina thank you for your post here on the Zoom Community! No problem, it could be that Zoom has been uninstalled from your computer somehow. I wanted to share this link to our Getting Started information pages. There are different tabs for Download and Install, Set Up, Use and Learn, etc. Can you have a look and see if this helps?
https://support.zoom.us/hc/en-us/categories/200101697-Getting-Started
If this has answered your question to your satisfaction, please click the "Accept as Solution" button below but if not please reply and we can continue the discussion. Thank you!