Just install this extension: https://www.i-dont-care-about-cookies.eu/
Also, having too many extensions slows down the browser (because they need to parse/manipulate DOM) and extensions themselves are also a security/privacy risk and finding the good ones for every browser can be tedious.
Besides, my mom has no idea what's "a browser extension".
Most people just need one extension: uBlock Origin (or built-in Opera/Brave adblock) with a filter list from prebake.eu. No more ads and cookie banners. Easy as that.
www.google.com###lb
www.google.com##html:style(overflow-y: visible !important;)