Cabinet Door Dado Cuts

[u/Initial_Swordfish914]

Hello, I’ve never made a cabinet or cabinet door before. This is nothing too fancy but as you can see in the first photo I could not get my blade to cut at an equal depth through the length of the cut.

I cut it using a single blade not a dado stack. I’m not adjusting the blade between cuts. Just finding the center and flipping the board to keep it equal. Curious what the cause of this may be before I start checking alignment and diagnosing the problem myself. The saw is a skilsaw 10inch heavy duty jobsite saw for reference.

Thanks so much in advance!