an android emulator has whatsapp and matrix bridge set up, bridge reads it, and then the bridge sends you the whatsapp message to your matrix front end client(element or whatever) official documentation https://matrix.org/blog/2019/02/26/bridging-matrix-with-whatsapp-running-on-a-vm/

You need to host your own server and then install the software for the bridge.

I think it was this one https://github.com/mautrix/whatsapp but no guarantees