You're doing something fundamentally wrong. If you're losing at Copper, odds are 99% it's that your macro is no good. Micro isn't important, scouting isn't important, you don't have to rush, just focus on getting a good build order with good timing, fully harvesting your minerals, expanding, never missing a MULE/Larva/Chronoboost coldown, never queue up any units, and always be spending all your minerals. Just pump out tons of units, attack-move them to the other base, and go back to macroing. You'll win Copper games easily.