>>48394087Gardevoirs strongest asset is distance. Keep your distance from the enemy at all times. Gardevoir is a burst damage dealer. My set has a Focus Band, Muscle Band, and Choice Specs. Focus Band to keep your self alive. Muscle Band is going to come in handy as a Ralts. Doing more damage means more exp, and more levels. The earlier you evolve the better. And Choice Specs to power up its already sky high Special Attack.
For move set I always find Moonblast and Psyshock are the best options. The easiest way to use Moonblast is for stuns. When you're alone or in a team fight stunning enemies is very useful. Psyshock is best for distance. It hits hard and multiple times. Psyshock is also useful for scouting and damaging enemies who think they can rush your goal.
But usually when I play Gardevoir I stay either in grass or on my goals and use Moonblast to stun and then Psyshock to basically gut the enemy HP. Most players scurry back to their side of the map. But by the time they return I already have moves back from cooldown, ready to do they same thing again. The only weakness of using one is that it gets bodied when its by itself, More so than other mons. But if I'm with a teammate, a majority of the time my strat works.