Trophies are only nice for ninja event, for the rest it’s for show. So make sure you get a set of farm gear (6 different items) and just after start of ninja event, drop trophies by 1000-1500. After (or during) war season, start to gain trophies by using match maker with same farm gear wardrobe.
My farm gear wardrobe has triple speed, enough leadership and I need 22 bread. I even use this set during the pal event. It saves bread. And fights are that easy that you can chose how many raids you need, by deliberately ignoring some towers.
Even during war season it can be good to have lower trophies. Not only do you give less skulls inside COF, more important is that lower opponents pick you as target and when they do, they either don’t score a lot of trophies or resurrect and scroll and give you gems. Best scenario is where players raid, scroll and resurrect and still fail miserably.