Adding to a loser gives you a false sense of security as it improves your accuracy aka being right and this makes for easier psychological trading.
Unfortunately.....
The above does not come without a hefty price, big losses in relation to most of your winners.
Winning for the most part on small size, losing for the most part on big size.
You are much better off accepting the reality as soon as possible, that you were wrong, and securing the protection of capital by realizing a small loss.
When you average down you re-enter at a better price of your intended direction except the following detrimental actions occur.
1) Eventhough you are improving price you are dragging a previous loss that's becoming even bigger
2) You are increasing your risk, sometimes exponentially.
It is better to stop the damage and improve price by re-entering vs not stopping the damage and barely improving price while increasing risk.
Try it, it will help you take losses more responsibly.
Losses are part of the business, they are inevitable, don't try to evade them, it's impossible.
However, what is very much possible, is avoid big losses, but only if you do not add to losers/don't take stops.