Screwless

Trying to build with as few metal fasteners as possible. Used these Miller dowels for the floor, hope this works. Anyone have experience with these?
One problem I have is that the drill bit is so aggressive that it tears up the plys of the plywood, is there a way to solve this? Thank you in advance for any help, I have never built ANYTHING out of wood before.
One problem I have is that the drill bit is so aggressive that it tears up the plys of the plywood, is there a way to solve this? Thank you in advance for any help, I have never built ANYTHING out of wood before.