how can I fix the following when I try to search dial tcp: lookup search.3bamfz.com: no such host". I am not very technical. Iam using Mac Book Pro Mojave version 10.14.6 and Safari 14.1.2

I hope you guys can help me. Befor i start, I am not a technical person.

How can I fix the following error when I try to search "dial tcp: lookup search.3bamfz.com: no such host".

I am using Mac Book Pro Mojave version 10.14.6 and Safari 14.1.2

Thank you

Ps. I don't know if upgrading to MONTEREY might fix the issue. The problem with this that everytime I try tu upgrade I lose connection.