It’s an easy way to do video call top your Instagram friend.
Open your Instagram home page and go to inbox by clicking on top right option like this

Now a list of all friends open up. Select any friend whom you want to call. Or you can write name of your friend on top like this

Now inbox will open up. You can chat with your friend. To do video call click on top right option like this.

Video call will start. Its quality will depend upon your internet connection.

It’s an easy way to do video call.
Thankyou…