You can use TA. Price should respect previous support levels in a bullish trend. There can be multiple support levels. If 2 are broken in a row, then you are probably trading the wrong direction.
Do you put any ma's etc on your chart? timeframe?
Adding to losers and adding to winners is the same thing. You are trying to time a top or bottom, or average up or down in what is a temporary move for or against your direction.
Averaging into a loser that then goes back up is exactly opposite to averaging into a winner that then goes down. The two will cancel each other.
There is no hard and fast rule.
That is one the most Dunning-Kruger-esque posts on ET!
1) Scale-in is not about "picking" tops and/or bottoms. Scale-in is a technique that is deployed when your methodologies and trade plan dictate.
2) Scaling-in to a loser is a technique to attain a "better" break-even point.
Scaling-in to a winner is a technique to increase ALREADY EXISTING (unrealized) profits.
NB: Losers can be longs or shorts. Winners can be longs or shorts.
3) Scale-in to a loser vs scale-in to a winner DO NOT CANCEL EACH OTHER. A failed scale-in winner will almost always exit with at least some profit. A failed scale-in loser will almost always be a bigger than initial loser. Again, methods and trade plan dictate, hence, "almost always" is my bias.
If you scale into a loser, you have decreased your avg price. If it then goes in your original direction, ...
If you scale into a winner, you have increased your avg price. If it then goes opposite your original direction, ...
Why are you comparing apples and oranges?
In theory there is no difference between theory and practice. In practice there is. ~ Yogi Berra
%%You used the term "bet". You are gambling.
I don't gamble...
If there is not a "high conviction" (of profit), why would I take the initial trade?