Getting your chords to sound good is not a matter of pushing your fingers down with brute strength. It has more to do with your posture, placement of fingers and developing the control and ability to arch in the smaller joints of the fingers. This can be achieved by using easier chords that incorporate open strings and changing from one chord to another slowly and carefully allowing your hand to relax between the changes. Over time you’ll develop more ability and your chords will sound better. So for now be patient and if your chords sound doinky and buzzy don’t worry about it, just keep playing.