How to run multiple YouTube channels without getting them ALL banned (save this):
Every channel gets its OWN Gmail. 1 Gmail = 1 channel. No exceptions.
Always use Brand Accounts, not personal. You need the ability to transfer ownership later.
Set up an "umbrella" Gmail, one account that can access all your channels. But NEVER make it the primary owner.
Mix your roles. Don't be "Manager" on every channel. Vary it, Manager on some, Viewer on others. YouTube flags one account controlling everything.
Max 10 Google accounts per browser. Use separate browsers or sessions if you're scaling past that.
Daily workflow: log into your umbrella account, access everything from there. Stop logging into 12 Gmails every morning.
The rule is simple: If one ban can wipe out everything, your setup is broken.
You're building a system, not just channels.