I have a built in area that is 21.5" deep (see attached picture). I'd like to mount a TV, but I've tried finding studs in the back wall and I think there might be one around the center, does not appear to be studs anywhere else as far as I can tell (and the wall seems pretty thin to the outside so I'm not even sure the "stud" I found is an actual stud). I drilled some tiny holes and the center is the only area that gave any resistance.
My plan is to add new wood to the area outside of the wall that I will paint white and attach a TV mount to that, does anyone know what size wood I should get for that (2X4 etc)? And also how would I secure it to ensure it can support a TV mount (aka put screws into the top/bottom or some specialized way to do secure it)?
Also if anyone has a better plan to mount a TV that'd be great haha, my plan is to get a TV mount that extends very far so the TV can be wider than the built-in area.
Thanks! Edit: Added picture, whoops! Edit: Thanks for all of the suggestions!! I'm an idiot and I'm going to start super easy and try a mount that uses a single stud, like this bad boy: https://www.amazon.com/gp/product/B00EVXEW7Y/ref=ox_sc_act_title_1?smid=A4RWQRCTJ6CYV&psc=1 This place was built in the 70's so I'm not sure what codes they followed - the stud finder "found" studs on the back wall, but I drilled a tiny hole into them and 2 of the 3 had no resistance (on the far left and right), feeling decent that the center is a stud. The wall seems very thin though so I'm definitely concerned that I'll go through to the outside haha, we'll see in time. If that does happen I like the idea of mounting plywood and using that as the studs, I think plywood glued/screwed in could do the trick, the TV is only 22lbs so crazy light.