There's no like a YouTube insider here, we all are users of the platform and no experts at all but we have a Silver Product Expert that might see your post and reply.
We can try to help but for that we need a better explanation of your channel, saying it's terminated by a severe violation doesn't really help and we are as lost as you are.
Try to explain what your channel is about?
Copy paste the email Youtube sent saying your channel was terminated
Where did you get your clips from? (lying will make everyone's work harder, no one works for YouTube here so just be honest)
Where you get your music from?
How many videos violated copyright?
How many copystrikes/claims you had?
Did you do Giveaways?
Etc etc