We installed a digital TV antenna onto a brick wall. First we tried standard expanding anchors. When we tried to tighten we cracked the brick. So as not to be subject to the ire of my mother we changed tack.
What you do is to glue bolts into the brickwork with epoxy. You can either buy dedicated "chemical anchors" or use a syringe which mixes the glue as it dispenses.
What we did. Drill a hole in the brickwork. Remove the dust. Fill the hole with epoxy, screw a stud into the hole, wipe of the excess that comes out of the hole and wait for the epoxy to set. Then attach whatever it is, put a washer and nut on the stud and tighten the nut. Sorted. There for life.