Any Search Manager can't be removed.

I have a problem about Any Search Manager browser hijacker, I tried to look and search how to remove it, then follows the step but it still won't budge.

I've seen advices that says to remove the extension from it, but the thing is, there's no said extensions on my browser(Safari).

I can't even change the homepage website because it won't allow me.

Below is pic for reference.

I've tried using Malwarebytes, CleanMyMac, and even clearing my cookies and website data to no avail.

Idk what else to do. Hopefully someone can help me with this.