I wouldn't classify you as a smaw noob. You can still kill someone when they use explosive focus and you will switch to another loadout if the SMAW one is not working. This is in reference to the knucklehead post.
If it's yellow, leave it for the next fellow. If it's brown, flush it down.
As in Conduit 2, you're just a little rusty. My aim kind of hindered a few days ago. It's working OK again now. Just keep playing and perhaps your skill will increase. Also, the SMAW isn't exactly an accurate weapon.