I need to hang a pretty heavy mirror over 50lbs but I do not have a stud. The wall is drywall. I wanted to use this anchor Hillman 122310 Brass Conventional Picture Hanger 2 Pack 100lb https://www.amazon.com/dp/B000BQN94W/ref=cm_sw_r_cp_api_i_p7m0DbS6VCJPC but the instructions on the back say the 100lb weight support is only if you hit a stud.
Can someone tell me what works well for a heavy mirror that does not have a wire on the back of it. It basically has two circles on the back framed so that a high or screw can be placed into it.
Do I need a stud 100% or can I go right to drywall only?