How to disable tree sway in CS:GO

You can't get rid of these little shakes when you shoot and aim down to compensate the recoil. It's only possible, when you're using "sv_cheats 1", so it won't be possible in any server. The NiP aim is not smooth as you think. It just looks like it's smooth, because you're a GOTV spectator. On GOTV they turned off this visual shakes, to make it more watchable for a general public. Try, instead, to get used to that. The shakes appears to annoy a little less when you play at 128 tick rate servers. Try that too. Good luck and keep practicing.

There is no real way to avoid getting into games with bots when you use the quickplay/matchmaking options. Browsing for games manually is the only way to assure you get into a game with real people (or playing competitive).