As others said drill into mount or mount to stud on one side and mount with snap toggles to drywall on the other. I just hung a 65'' TV and did a ton of reading on mounts and came across several comments on reddit of people who do installations professionally who say snap toggles can work for non-articulating mounts. Each snap toggle is rated for shear weight (force pulling down parallel to drywall) of 265lbs.
Ferenczi_Dragoon t1_ixxgdg5 wrote
Reply to Help with downlight fitting by ilostmyselfuk
As others said drill into mount or mount to stud on one side and mount with snap toggles to drywall on the other. I just hung a 65'' TV and did a ton of reading on mounts and came across several comments on reddit of people who do installations professionally who say snap toggles can work for non-articulating mounts. Each snap toggle is rated for shear weight (force pulling down parallel to drywall) of 265lbs.