Muesli plus oat milk.
Cheapest way is Trader Joe’s since they sell both relatively cheaply and their oat milk is pretty good. But their muesli is a bit lacking so I prefer Seitenbacher’s muesli (order direct from them). Can toss in some more dried fruits from TJ’s too.
It’s more filling and nutritious than just cornflakes.
It’s sent out in waves.
First escalation, you just a warning with an “X” that you can close.
Second escalation, you will be the same warning but without the “X”. You can of course just block the element.
Third escalation, you get the “3 videos” message. After this, YouTube no longer serves you videos. You can get around this by logging out and using incognito mode on Firefox. There are other ways too if you go browse some ublock origin communities.