I don't have a specific recipe... The one above looks good!!!
Fairly simple... easy....
If there is a missing ingredient that you are tasting in the restaurant food that you are not getting, then try to separate that out and identify what that might be. But, usually, I think beef and brocolli is fairly simple. No ginger, etc...
NOTE: add your corn-starch/thickener to liquid that is cold... make sure it is well dissolved... then, at the end, add this to your dish on the hot stove, stirring well.
To be honest, I would steam the broccoli for a minute, separate from the stir-fry, and then throw it in at the last minute.
Broccolli is the type of vegetable that has a 'sulfer' odor...
I wouldn't want too much of that permeating the whole dish.