>sorry, I have never seen these supposed ads in win11
It's a setting called "Get fun facts, tips, tricks, and more on your lock screen", and it's checked by default.
Ah, it's available only if you pick a specific wallpaper image, that's why not everyone sees it.
Not only is it enabled hy default ... it magically gets enabled by default after some days, desktop spotlight feature that pushes some lock screen wallpapers and trivia overriding my personal wallpaper, Edge trying to do the same thing to homepage, edge trying to steal browser favourites and extensions from other installed browsers once every few weeks, edge stealing default app linkage for PDF viewing, copilot in various flavours appearing on taskbar, start menu, edge, ...it's mayhem out there.
Death by a thousand cuts. So many micro abuses by the OS that keeps reminding you who has the power.