Halo recessed can install Q
In addition to the good ideas already posted self drilling Kelly screws through the bars where they meet will ensure your can never moves.
Your not an idiot. An idiot is someone who's too proud to admit they don't know something or thinks there's nothing left to learn. In a trade like electrical especially in the industrial commercial end there's such a large scope of work that even after a lifetime there's always something even the pros haven't seen. Better to ask if you don't know than it Comming back to bite you on the butt.
Sarcasm is my friend
I'm here to learn too, i do mostly commercial/industrial/new construction and this place is a great way to pick up tips on residential from some good electrical minds. Excuse the spelling, my phone has a mind of it's own.