Browser Support • Changing Search Engine

Operating system : Linux Mint 22 Browser version : 34.1.0 32-bit or 64-bit browser? : 64 bit Browser theme (if not default) : Moonfox 3 Installed add-ons : Menu mod 2.2.1, uBLock Origin, Downloads Window, nMatrix Installed plugins: (about:plugins) : None

I'm trying to change my search engine from Startpage to DuckDuckGo, as Startpage seems to be adding various annoyances lately, but I can't find an option anywhere? https://addons.palemoon.org/search-plugins/ mentions using "Manage Search Engines" , but I can't find it. I've checked Menumod to make sure I haven't turned anything off. Have I corrupted something, or have I lost my marbles? Thank you.