Add these 2 extensions to your browser:
uBlock Origin Lite uBlock Origin
Go to the extensions icon, then click on uBlock Origon. Click on the settings icon, and turn on every filter. Do the same for uBlock Origin Lite.
This is to block ads (from Spotify, YouTube, etc.), protect from malware, remove annoyances like cookie pop-ups, and provide a cleaner, more streamlined web-browsing experience.
Both extensions and filter lists are open-source, which means you can see their actual code.