Hello, yes, the fans on the side blow inside.

Hello Alinje, unfortunately I cannot
because I use the case horizontally.
In my opinion, however, the circulation is very good, as I have automatically set the fans to quiet in the BIOS and they even switch off completely at times during normal operation and only run from time to time. You can actually only hear the fans when you switch them on.
The side fans are reverse or suction fans.

The fans are just installed so yes the air will be distributed to the side wall and further...I am also still working on how to install the graka with aio...again out or in lying form