How do I use the wake word on my phone similar to “Hey Google?”

TL;DR: how do I make my microphone on my phone listen for a wake word?

Greetings, newbie to HA and thru the documentation, Ive made a wake word for my voice assistant, VASHS (Voice Assistant and Smart Home System). I’ve swapped Google Assistant on my home with HA, but while I can use it by holding down the home button, I can’t say “Hey VASHS, do xyz,” and the topics I’ve seen are from 1+ years ago, so I’m wondering if there’s been new developments that add wake words, or if my search terms weren’t descriptive enough. Many thanks for any help