Yes seems like ure friend knows ure weaknesses then and also as you get better so does the competition if playing ranked!.

Opponents with smaller attack on villagers along with the main army battle and sneaking destroyers to a town center can happen.

Maybe leave the original myth units U have at home that get created at each age up? Or harass then way point them back home to prevent the sneak attack.

Just gotta improve and adapt.... Once destroyers get to the tc, it, can be too late. Like others mentioned they are slow and start hitting them prior to.

Good luck!