Glide can filter data based on the current user. It does this by matching the email address the user signed in with, against a column of email addresses in your sheet, showing only those rows containing the current user's email.
For example, suppose you have a table of hobbies:
By default, all users of your app see the same list:
If you set the Email filter to the
Now John, Sarah, and Jules all see different hobbies when they use the app: