Let's just boil it down to the main comments:

"The Committee has reached the following results: - The Committee found a status of lack of adherence to laws, systems, and measure by all concerned parties to different degree. This includes adherence to design, license, and safety conditions, which contributed to Villagio catastrophe. The "Gympanzee" shop was not licensed as a nursery by the Ministry of Social Affairs and thus did not have the necessary safety conditions. "
...
" There was a lack of response among the Villagio security team, including the Nike store's staff. The Committee found that there are no effectual plans at Villagio meant to prevent, contain or at least reduce the effects of such an incident. For example, there was no early warning detection system in the commercial complex.
Poor coordination between government agencies responsible for public safety besides deficiencies in fire standards, which extend beyond Villagio and Gympanzee into other buildings in Qatar. These buildings are not adhering to the laws and measures regarding safety and fire-fighting."

Plenty of blame to go around.
The mall didn't meet its licensing requirements.
Gympanzee didn't meet its licensing requirements.
Mall security staff failed.
Firefighters didn't have correct maps of the mall (it was a full 30 minutes between when they arrived and when they realised there was even a "nursery").

In my opinion this report makes it clear that no one involved in this tragedy can honestly say "I did all I can, but was let down by others".