I have a bit of a setup; but it's worked reliably for years at this point: 1) matrix-synapse; 2) https://github.com/mautrix/imessage.git running on an old iMac ; 3) native matrix client on android, iphone, desktop and element-web. The old imac that i've been running the bridge on has been pretty solid, i imagine if you can get a VM successfully booted, it could also work.