Why does my google say google+channel=iphone_bm

I checked the reference you posted.

Here is how it looked.

I ran EtreCheck. No threat found. EtreCheck:  https://etrecheck.com/maspro

I scanned with Malwarebytes for Mac. It returned a "Clean" report.

For instructions:  Install Malwarebytes for Mac          Uninstall Malwarebytes for Mac

You can do an EtreCheck check and a Malwarebytes for Mac scan to make sure that there is nothing bad happened.

It is up to you.

This may be from Facebook or may not be from Facebook.

I visited the page.

I am going to do an EtreCheck and a Malwarebytes for Mac scan.

I will let you know what happened.

This is what it says:

"This Page is automatically generated based on what Facebook users are interested in, and not affiliated with or endorsed by anyone associated with the topic".

Please don't interact with it. Don't login or give any information.

How to block pop-ups in Safari - Apple Support

A Google search returned this page.

https://www.facebook.com/pages/httpswwwgooglecomclientsafarichanneliphone_bm/618630748239711

Please read what it says at bottom right corner of the page.