Do you want to know "why reels are not showing on my Instagram after update". If you've updated your Instagram app and rings aren't showing up on your account, there are a few reasons why this could be happening.
First, it's possible that the update hasn't fully rolled out to your account yet. Instagram updates are usually rolled out in stages and it may take some time for your account to receive the latest version of the app. In this case, you can manually check for updates by visiting the App Store and searching for available updates for the Instagram application.