I tried drilling the holes as instructed but then my drill won't go any further than 1 to 1.5" into the wall before hitting a hard substance that looks like plaster on top of metal or concrete. I went out and bought a wall stud and it basically detected the entire wall as metal. so I figured I calibrated it wrong which was correct.
So I put the stud next to a wall socket where I knew there'd be no stud or anything. Then I drag it and it would beep where it said studs were, but drilling there resulted in the same problem. Max depth is 1.0" - 1.5".
So I drilled a larger hole and then took pictures and the results are:
How can I mount the TV in such a wall?
I tried buying Butterfly/Toggle screws but they're too large to insert and anything smaller can't hold the
30lbs or ~14kg that is the TV. Drilling in different spots are the exact same.
(Full set of pictures at https://imgur.com/a/qsZ1PkT )