How to sell with the maximum profits in high targets

when the signal reach first target
sell 50 % of your amount
then set stop lose for the rest 50 % a bit little below the first target
if the price crashed after first target the stop lose order will be excuted with the profit of first target too for the rest 50 % of amount
if the price didn't crash and reached second target sell 20 % of the amount
then set stop lose for the rest 30 % of amount a bit little below the second target
if the price crashed after secod target the stop lose order will be excuted with the profit of second target
make these steps for the rest of amount in the third and fourth target