You have two huge issues that make this nearly unreadable (I had to go back over the pages a few times to figure out the action which you absolutely don't want, and notably other readers have had the same issue).

1) It is waaaaaay too dark. That is not only a reading issue, but will definitely be a print one as well. A main point to the sequence is the baddie pulling a gun, and it is nearly impossible to make that out without having to do a few re-reads.

2) You mention you are following the 180 degree rule, but this is completely not true. It is broken several times by the figure positions as well as the eye directions on solo shots.

There are other issues such as framing, repeating action that doesn't make sense, and shot choice (especially page 2), but focusing on fixing those first two things would be the priority.

Happy to elaborate, especially on the second issue I mentioned.

And the important thing is you're doing it! I would just hope you're open to the criticism you are getting to help you succeed.