One technique that many people start and stick with is playing block or solid chords in the left hand. This basically means playing the whole chord in your left hand while playing a single melody in your right hand.
What does the left hand play on piano?
Your left hand plays a supporting role when you're at the piano. ... If you consider middle C the middle of the piano, you generally play notes above middle C with your right hand and those below middle C with your left. The lower staff is the bass clef.