I am trying to make my shots more consistent, someone help me

[ewc19972]

Recently I was golfing in my yard with my foam balls and i was using my 5 iron most of my balls were shanked, that's either pulled or what I call "grounding out". i think my problem would be that I'm not slowing down my swing and looking at the ball as i follow through. i used to be a lot better but it fell apart overnight seemingly, and sometimes i do a really bad slice. usually with my sand wedge i been pulling all of my shots. only my hybrids and woods have been ok. the club i've been having the least trouble with would be my driver. I sometimes will slice it a lot or a little or maybe i will hit it decently straight or pull it a little or a lot.