SUMMARY: #adblockers are often super shady, and two of the few trustworthy ones are uBlock Origin and #Firefox Focus.
Please Stop Using Adblock (But Not Why You Think)
https://medium.com/@trybravery/please-stop-using-adblock-but-not-why-you-think-13280e76c8e7
@Treppenwitz @KitRedgrave Also worth noting that Google has decided that systemwide adblockers violate their developer's agreement, so they are banned from the Play Store. Any you find there are not real & likely ripoffs of the open-source versions that could contain malware.
As such, we're forced to sideload them, preferably using an alternative app store like F-Droid. AdAway uses root, while DNS66 uses the proxy system. These are the most reliable adblockers for Android.