I am not a professional youtuber but those who gain their living on youtube confirmed the relevance of my advice to you who want to become a successful youtuber.
Buy a usuall count down timer for cooking like this pomodoro timer.
I know you can do it on your phone but don’t.
It is important to have a mechanical one.
Set up the cam.
Set pomodoro to 5 minutes and start talking.
1. First 5 minutes section. You will want to stop the cam after first few seconds but don’t. Keep on talking bulshit till you hear the pomodoro ringing.
2. Second 5 minutes you may want to stop even earlier than the first but don’t. Keep on talking.
3. Third. Same rule. Don’t stop till you hear pomodoro sound.
Then take all videos and convert them into one 30 seconds lenght video.
Then post it.
With this exercise you will learn more than from hours spent on youtube video courses.