Always use different accounts for every Google Service. One "bad" Youtube comment can ban your Gmail account.
Or they will use your IP, say it was from the same device, or different IP same geo location...be afraid...be very afraid. "...Youtube Account Suspended" - "...All i do is watch videos and subscribe to my favorite youtube channels while sitting on the toilet!... I have no idea what to do." https://support.google.com/youtube/thread/21108892/youtube-a...
"I am not a Google or YouTube employee - Product Experts are volunteers"
wow, i must live under a rock, but is this how google does "support"... by volunteers?