If you have a lot of images for your study or research project, we recommend that you take a look at Tropy. Tropy is not a citation manager or photo editor, but it can help you organize and describe visual material, such as photos, scanned drawings, and handwritten documents.
Zotero is a reference management tool you can use for creating references in Word or another word processor.
You collect and manage your references in your own library, so they are close at hand when you need to insert references into the text and create a bibliography. The library supports and hosts courses in Zotero.
In addition to books, articles, etc., Zotero is useful for saving websites, blog posts, links to videos, etc. Zotero can be used solely as a collection of all your literature - a personal library.
So instead of a lot of bookmarks and reading lists in your browser, you can use Zotero to save and, not least, systematize your links. You don't have to use it actively with Word when you write.
Warning: Cloud services can damage your Word files!
Make sure that the Word files you are using together with Zotero is stored on your hard drive, and not in OneDrive, Dropbox or iCloud, since this can cause your files get corrupted and you lose your work.
Backing up the files to a cloud is okay, but not when you are working on them with Word and Zotero open at the same time.
Your Zotero library should also be stored on your hard drive. So just stick with the default suggested folder and let Zotero Cloud take care of synchronization.