Text messages not working in iMac

Set up iCloud on all your devices

Messages

Keep your messages up to date on all your devices. Learn more about Messages and iCloud.

Set up iCloud for Messages on all your devices

Keep your messages up to date with iCloud and make sure on iPhone >> Setting >> Messages > Text Forwarding and inside there the computer is listed by its' name and enabled.

Apple users can send messages to other apple users and not android like apple messages(I tried doing that and I can't send anything to android users with apple messages). You need to use certain messaging software like whatsapp to be able to send massages to android users

Welcome and Thank you too.

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The Very Best in the New Year !

I don't know since I'm not an expert. Sorry :( You should get a messaging app that support apple devices and android too.