In Google classroom, you can easily make a copy for each student
This will make a copy for them automatically and adds their name to the document title.
Step one… Click the plus then click create assignment
Step 2: add a title and select the classes / students you wish to assign to, add a topic and instructions, due dates if you wish, then click on the paperclip… then click recent if it's a google drive file and select it, you may need to search for it if it's not recent.
Step 3: Attach another if you wish then you can alter the View edit (edit one file as a group) or make a copy for each student (see below)…
then click assign, hit the dropdown next to assign if you wish to schedule the assignment.