Here are the two I used. Use either one or combine them as I did.
https://madewithlau.com/recipes/hot-sour-soup
The other is from SoupedUpRecipes. Look for her youtube channel, you'll find the video and a printable recipe linked to it. I can't seem to get the actual url.
I think the first time I made this I followed the Lau recipe and for this post I did my own thing.
Have fun with this!
-Dom