How to stop text messages from going to Mac ??

See if this article helps:

Add or remove your phone number in Messages or FaceTime - Apple Support

On the phone, try going to Settings/Messages and turn off text message forwarding.

Sign out of iMessages on your Mac.

See if any of the following articles can help:

• Use Continuity to connect your Mac, iPhone, iPad, iPod touch, and Apple Watch - Apple Support
• How to Disable Handoff on Mac OS - OSXDaily

remove from iCloud devices on Mac ?

Hi, I need help, I was to stop text message from coming to my MacBook Air

Follow the instructions given above.

Thank you but have turned off text message forwarding on my phone, still not working

Where do I find iMessages pls, I'm still learning how to use the Mac ?

Do I need to remove my iPhone iCloud devices ? I'm using MacBook Air

I got it, thanks man

Glad you figured it out. Just now getting back in front of a Mac.

Best of luck.