how to upload somone else's videos on youtube with permission

if you are trying to upload Someone Else’s Videos on your YouTube channel but sone you will receive a copyright strike so let me help you, I will guide you on how you Can upload other people's videos on my YouTube channel without facing copyright claim or other copyright issues, in fact, I will share my strategy to get permission to use other people's videos in my video.
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watch this video for a better understanding.