I installed Avast on Mac and now I cant access internet even when connected

Hi. I need help. My laptop suddenly can to access the internet after I installed avast. All solutions ive seen so far requires downloading a new installed and an uninstaller…

But like I said… i cant connect to the internet. wifi is the only available option for me since since i dont have the adaptor for modem to type c cable… and my laptop isnt allowing connections via usb and bluetooth either. How else can J fix the issue?

https://forum.avast.com/index.php?board=5.0