Based on the evidence gathered, the following points can be established:
There are multiple video recordings showing that the first shot grazed Trump’s ear, and others showing that the same shot struck the corner of the bleachers. In fact, there is even one video—the newly released footage from Comparatore—that shows both events. If you watch it frame by frame, you can clearly see the moment when Trump’s ear is grazed, followed immediately in the next frame by the impact on the bleacher corner, with debris and smoke visible.

Just by examining these two frames, the sequence becomes obvious. If you remain unconvinced, I encourage you to review Comaratore’s video again carefully, frame by frame.
It is also clear that from Crooks’ position, it would have been impossible to hit both Trump’s ear and the bleacher corner. Neither the vertical angle nor the horizontal trajectory aligns to make such a shot possible. On this point, we can agree.
Furthermore, you have presented video evidence showing that the first shot originated near window 2.

From this origine near window 2 it makes it entirely possible for shot 1 to have grazed Trump’s ear and then struck the bleachers. Everything is exactly in line. Even if you reject the theory that the walls were edited, it remains plausible that a portion of window 2 was open, allowing the shot to come from that position. As you yourself noted, given all the commotion surrounding window 2, it stands out as the most suspicious location for the first shot. Here is the trajectory:
If we accept that the first shot hit both Trump’s ear and the bleachers, then those two fixed points in space determine the trajectory, and only the area around window 2 fits.
Regarding Copenhaver, the evidence suggests that he was injured between shots 4 and 6.

The fact that he raised his left arm during the first shot is not proof of injury, since everyone in the top row startled and moved at the same time. The fact he is still standing after shot 3 makes it clear that he was seriously injured during shots 4 - 8 likely by Crooks. The bullet impact evidence confirms this as well:
I have laid out my reasoning based on the available evidence. However, I recognize that you may only be convinced through your own analysis. I encourage you to examine the material yourself and draw your own conclusions.
At the very least, we can agree on one important fact: Crooks did not fire all eight shots. That fact alone warrants a thorough investigation by Director Kash Patel and Deputy Director Dan Bongino.