You say it seems impossible that you'll ever play correctly...trust me, EVERYBODY goes through this stage. Proper chording is a real pain at first, it just takes some time get used to it. One day you'll be switching chords effortlessly and look back and laugh that it ever caused you trouble. One helpful thing I used to do is, when I would form a chord, I'd sit there and pick every single string to make sure they all rang out clearly. If a string buzzed or was muted, I'd apply more pressure, or move any adjacent finger that was causing the muting, or whatever the case was. Analyzing what I was doing wrong like that, string by string, helped me to NOT do it the next time I would play that same chord.