Example 1
Pull the indicator to a top or bottom, as it is estimates a trend. If it is in the middle of something then it is not a trend.
You must be aware also that there is no break of this trend i.e. candle on the other side of the support line that do not touch it.
With arrows the long signals mentioned (when the market touch the support line), where we open our positions.
Example 2
Here in this example you got two candles on the other side (in yellow), but they are overshadowed by the previous candle so it is not a break.
Example 3
The market checked several times the support.
Last check is pretty deep down extended. When we have these deep checks, the support moves from the line to where the check was i.e. where the white line is.
Example 4
Here is the next example XAUUSD 1h. It is visible that your current trend is whithin the previous trend.
It is triangle hence the levels you must respect are those of the bigger one i.e. the borders of the purple rect.
You can see here again the example how the market extended the support deep down (like example 3)