What should the exit stratege be? What's the best exit stratege?

Firstly when I used trailing SL, the profit reduced from 80 pips to 20 pips.
Then I take profit at 80 pips, but I saw I could have won 200-300 pips if I used hard SL.
Then I decided to use 200-300 hard SL, but hard SL made a 226 pips winning trade turned to a 244 pips lose trade.

Also I should make attention to my SL. Last time EJ at 130.94 hit my SL with 286 pips lose. This time EA at 1.8774 hit my SL with 244 pips. I think for EJ and EA I should use larger SL, say 350-400 pips.