I'm sorry BlueBelle that you have all these.
As a relative newbie to this forum, I have just developed my own routine.
I use the desktop version, and go to the Last Hour, or Last Day, page and scroll quickly through the lot looking for any Games threads first, and 'clean up' before opening up topics that interest me.
As I said earlier, I switch to the mobile site, find the selfsame Games and follow the arrow and 'Hide'.
I then revert (through choice) to the desktop site, where they are no more.
I rarely, if ever, get more than one or two popping up?♀️