Thanks for reaching out. If you believe the account was terminated in error you can appeal by using this form: https://yt.be/help/7epT . Also, here's more info about account terminations, including why it can happen: https://yt.be/help/KcLN . Hope this helps.
Thanks for appealing. We review appeals 24/7 and reply as soon as we can. You'll hear back from the team once your appeal is reviewed. Appreciate your patience in the meantime.