Most ppl who "avg down" are those who are "hoping" the market will eventually turn in their direction in hopes of avoiding a loss.
Then there are those ppl who see the tell tale signs of a stock, or future, that is getting ready to change direction based on data like increasing or decreasing momentum as it nears a pivot/support/resistance point, or macd diverg, for example. In this case they are NOT "averaging down, but usually considered to be "fading the trend".
I employ both tactics of dbl dwn and up when certain price action parameters are met.
Lots of experience is needed with these strategies. Novices need not apply. Practice, practice, practice ...Lots of practice