Monitor adjustable wall mount

Hi all,
I'm looking to buy a wall mount and a new 34" curved ultra wide monitor. However I was to mount it on an arm that I can attach to the wall next to my sofa so I can swing it out from the wall and play my pc games whilst sat on the sofa. Can anyone recommend any wall mounts that have quite a long reach and are height adjustable?

Hi there,

not sure if they offer adjustable mounts on an arm, but check out https://hideitmounts.com/