Whether the red dot you’re dealing with is under your profile photo, the home tab, or any of the other countless tabs on Instagram, it usually indicates that you have a notification that needs to be checked.
Sometimes, these notifications are not directly related to activity on your profile. If Instagram feels you’ve been inactive lately, it’ll send you notifications informing you of content you think you might like to interact with. To get rid of these dots, just click on the tabs they’re under.
A red dot under your profile photo in the lower-right corner of the screen means you have a notification relating directly to your profile. This could be for a variety of reasons, such as someone tagging you in a photo (which will appear under your “tagged photos” tab), needing to update your profile, or something else entirely.
If you’re looking to get rid of this icon, just go to your profile and try to find the source of the red dot. Once you see the notification it’s indicating, it’ll go away.
View more information: https://www.distractify.com/p/red-dot-under-instagram-profile-icon