A:AnswerYes it pulls out about 6 inches on each side which allows you to easily turn it a bit to the left or right for better viewing. It also will tilt down about 3 to 4 inches and easily stays in place where you want it. This is a very good mount for the price.
A:AnswerIt should. Samsung makes mounting them very easy. Just pay attention to the bolt sizes and use the adapters that come with the TV. Shouldn't have an issue. We used this for 75" & 55" TV and they are sturdy
A:AnswerThe mount will angle it towards the ground but it does not lower it. We have our mount above a fireplace as well so we angle it a little and it’s comfortable to watch from the couch.
A:AnswerThe TV brackets clip to wall bracket and wont release unless you pull the plastic cords to release it. The ends of the wall bracket are curved so the TV cannot side off the wall bracket but can slide side to side to center it on a wall.