Best adblocker for new MBP M1 with Safari ?

Have just purchased a new MBPro MI with Monterey and Safari browser .

Previous 2014 MBPro used Adguard which worked well .

Have tried Adguard on new machine and it blocks all websites .

Adguard can't come up with a fix .

Suggestions please as to an adblocking program which will work with new machine .