Helper video below will assist you with finding your TikTok ID

You can locate your ID in TikTok app. Go to Profile -> Edit Profile -> Click on username -> Copy the ID. Or watch the video below.

Helper video below will assist you with finding your Instagram ID.
You profile has to be publicly visible (not age-restricted) - here is how to do that.

You can locate your user ID in Instagram app, for this go to Your profile -> Edit profile -> Copy "username" field. Or use the helper video below.

You profile has to be publicly visible (not age-restricted) - how to fix that