Acting as a digital marketing strategist, ask the AI to generate a launch strategy for a new YouTube channel focused on entertainment content. The strategy should include recommendations for video formats, content themes, and a publishing schedule. Additionally, request ideas for initial promotional campaigns, collaborations with other creators, and engagement with the audience to build a strong subscriber base. 
<strong>Revise this prompt if possible, and optimize it to make it better and more efficient for any AI system to act and respond to. 
If possible run your optimized version.</strong>