(this is just one way, there are others)
Repair the broken pieces, filling in the screw holes as you go. Return the next day & carefully drill undersize holes
(shallow depth just to help the screws get started), if the originals are not self tapping screws then pick up some
(same size / length) at your local parts store. Carefully install them, remember it’s only holding minimum torque.
Tip: By waiting until the next day for the epoxy to cure, the screws should remain removable....