I'd recommend using using "I don't care about cookies" and "Cookiebro" to restore your sanity. Basically you want to automatically accept all cookies, say yes to all cookie banners, then remove all cookies when you close the browser except the ones you explicitly want to keep (for staying logged into certain sites). Those two firefox extensions facilitate that.
Unless you're on mobile and then you're helpless and it's even worse because the dialog takes up 30% of the screen, and the top sticky ads take up the top 15%, and then you have autoplay video ads at the top of the page filling up the rest of the viewable area, then you go to try and scroll the page and then a new well engineered ad has a delayed load to pop up right where you're about to click....