How to enhance ad-blocking

I received a mail announcing version 5.16 of blokada. In this mail there is a link to verify the ad-blocking on my phone:
The result is 8% only…
How can I reach 100%?

My phone is a xiaomi redmi note 7 android 10QKQ1.190910.002 and the bowser I use is duckduclgo

Thank you for helping

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