Is there a reason you did not lubricate the area where the "tabs" on the brake pads and those metal clips meet? That's a friction point every time you brake.
Found out the hard way that the clips absolutely must be OEM. Duralast Gold and Bosch pad clips both wouldn't fit properly, so it was impossible to get the pads in. OEM snapped right in and the rest was a breeze. I used the Bosch pads and they seem to be fine, just make sure the clips are OEM.
Pad was installed incorrectly. (Hard to tell 100% from this vid). The pad spring at the bottom of the pad goes on the outside of the bracket (true of both inboard and outboard pads). Look at the removal of the pad at 2:00 and you'll see the pad spring was on the outside at around a 45 degree bend. This is correct and how it should be reinstalled. Looks like at 3:59 you place the spring directly in to the bracket slot where the brake pad tab goes. This will prevent normal movement and retraction of the pad causing inconsistent and or premature pad wear. Might also be why you had to make room with screwdriver for the top side @ 4:16. Gotta say it's a very common mistake that I've made myself and I've seen professional shop mechanics on this site make do the same. My apologies if I'm wrong. It's kind of hard to tell on your video.. More of a PSA for those trying to do this work on their own
It took me a couple times watching, and I see the issue. The spring does need to go outside on top, not inside the groove. Also, there's a $15 tool, (Found on Amazon and many parts stores) to easily and safely compress the pistons. Many pistons are made out of ceramic, and can be damaged easily.
