Need help using Air Chisel

[Gringourd0]

Hey everyone, previously I asked for help on my ceiling removal and was able to get a lot of great help! Here's the issue I'm facing, I have no idea what I'm doing wrong with my air chisel! This is my first time doing it and I'm not getting anywhere. I'm using the exact same products you see in the instruction videos and I can't get any of the rivets out. It seems like there's just not enough power to actually do anything. I've attached a video showing what I'm doing, hopefully someone will know what I'm forgetting and can help me out. I'm also going to list what I'm doing here, any and all help would be greatly appreciated, god bless!

1. Turned on the air compressor and set it all up, made sure there's enough pressure.

2. Use the spike to go through the rivet and get the ends popped out.

3. Equips the chisel, makes sure there's still enough air pressure, and places it against the rivet.

4.holds the trigger, and first I wasn't holding the gun tight enough so it goes off target, then I try again. When it actually hits the rivet it has enough power to rip the paint but nothing else.

Video: https://youtu.be/0zkld9KE8UM

I'm an absolute amateur in all this and could use some help, thanks in advance!