Can I replace the cracked display frame that mounts the LCD?

I am planning to test something out because I have some small thin steel bars lying around might use it to reinforce the bracket but I might try to screw it in to be more secure. Are their any wires/ pcb /components underneath or inside the bracket that might get damaged if I drill 2 holes on it?

You can drill. If you look at it, this is a very thin spot in the frame and they all break in the same location. I also used a Dermel type of tool with a cutting disk and roughed up the surface to help creat a better physical lok of the epoxy.