Practical guidance for fixed, tilt or full-motion tv mount: which should you choose?.
Select movement for the way you watch
A fixed mount keeps the screen close to the wall, tilt helps with a high position, and full-motion helps when the viewing angle changes. More movement also changes the load on the fixing.
You may also find this guide useful: how to choose a tv wall mount: vesa, weight and wall type.
You may also find this guide useful: what is the right height for mounting a tv?.
Practical checks for select movement for the way you watch
Note the desired viewing positions. Check access to rear ports. Confirm the wall can carry the chosen mount.