Install uBlock Origin and enable its Annoyances and Cookie Banner filters. This will be most effective in Firefox, but will work in other browsers as well.

If you're unable to do that for some reason (e.g. iOS), check out the Kill Sticky bookmarklet, which at least lets you nuke these quickly and with consistent muscle memory. It also gets rid of those trashy sticky headers. https://www.smokingonabike.com/2024/01/20/take-back-your-web...

NoScript also does a good job of preventing this garbage. It can be a bit of effort to use, but I find it worth the effort.

If none of these work, then take that as a signal that the content is not worth viewing, close the tab, and move on with your life.