I want the attention of a friend in a one on one video call. I don't want other people to distract him.
Why would you want the attention of a friend in a one on one video call?
I want to congratulate him on his win.
In a one on one call they should be paying attention to you by default. It's completely understandable to want their attention.
My video feed was awful and blurry. I needed to show him my appreciation.
It's nice that you are going out to say positive things to your friend. They will be happy to hear that from you.