So I was watching this youtube short which said that this is sorta how instagram's approach to a similar problem was

So instagram founders worked at google and they found that if you had written your username, you had 80% or some high% chance to create an account since (I think the barrier of friction has been crossed and its all easier from now, so why miss, why do all efforts and leave now, I am invested into this now and I will use this now)

So insta founders basically made it so that whenever you upload a photo it would silently upload in the background and then you would mostly write some captions of the image and that would take some time too, so in that time, the picture gets loaded into the database and that's how it was so fast compared to its own peers while using the same technology

If someone scraps the picture/story and doesn't put it, they just delete it from the system.

I will link to the youtube short since that clearly explained it better than me but this was really nice how things are so connected that what I watched on youtube is helping on HN.