Here's a short demo of a pretty good voice to text interface that's available for free: https://twitter.com/lunixbochs/status/1378159234861264896

I had to use it for a while when I was unable to touch a keyboard or mouse while recovering from RSI and I was surprised by how quickly I was able to get to about 80% of my previous productivity using just my voice. I still use it sometimes even though my RSI is fully healed.