Extension adblock plus

this extension always self installs after every system reboot, why my paid Avast doesnt block it?

Because it isn’t malware but a browser add-on to block ads.
What is your browser ?
How are you removing it ?

I used to use it, but now I use uMatrix and uBlock Origin.

i didnt use it ever once, only used adguard, my browser is chrome
i deleted this shit many times, even directrly from system folder how does it isntalling again?