I have a Gmail account I opened in the early days of Gmail and stopped using on a regular basis when I got my own domain around mid-2000's. Whenever I occasiona

I have a Gmail account I opened in the early days of Gmail and stopped using on a regular basis when I got my own domain around mid-2000's. Whenever I occasionally check in, I always find heaps of spam. Many I've tried unsubscribing for and still get the mail--obviously Gmail's filter doesn't take into account senders I've flagged time and time again as spam.