Web Browsing Security for a Noob

Hello, as of recent i've gotten quite big into privacy (especially with leaks being somewhat often now), currently am using Windows 10 but intend to make the change to Linux very soon but that's not why I'm making this post. I recently moved away from browsing on Edge to Opera GX and as of right now, am using Librewolf with SearX being the search engine.

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What i'm asking is, is there anything very obvious I should be turning on/off …

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