is there anything i can manually do?
PC case airflow rule of thumb: front and bottom - intake; top and rear - exhaust.
Side fans can be either intake or exhaust, depending where they are located.
For your conf, bottom fans i'd flip all around, for them to be intake, rather than exhaust.
Since in exhaust form, you will be starving GPU from airflow, since 3x 120mm fans will pull all the air from the GPU and it's fans. Moreover, bottom exhaust fans will work against GPU fans. GPU fans try to pull air upwards, towards GPU heatsink, while bottom fans pull air downwards, away from GPU fans.
And when GPU fans are stopped, bottom fans can actually force GPU fans to spin the other way around, creating far more severe issue, rather than lack of airflow for the GPU. Namely, when fan isn't powered and it is spun backwards, it will generate electricity and feed that electricity back to GPU. That, for the very least, can overload and fry the fan headers on GPU. Or the worst, kill entire GPU.
This, bottom fans drawing air from GPU, whereby GPU fans have work far harder than usual, can be one of the leading causes why one of the fan bearings failed partly on you. Same can happen with other two GPU fans as well, if you keep the bottom fans as exhaust.
Since 011 Dynamic Evo is fishbowl case with emphasis on looks, rather than the main purpose - PC components cooling, there is no ideal setup you can do, regarding fan placement.
Best for cooling would be:
Bottom - intake
Top - exhaust
Rear - exhaust
Side - exhaust
This way, you'd have negative pressure, with 3x 120mm (bottom) as intake and 7x 120mm as exhaust.
If you run all fans at same RPM, then you'd have quite severe negative pressure, but at least, no fan would work against other fans and you'd have airflow path inside the PC case.
Another option is:
Bottom - intake
Top - exhaust
Rear - exhaust
Side - intake
This way, you'd have positive pressure, with 6x 120mm as intake and 4x 120mm as exhaust. Not as good on cooling as negative pressure, but leaning more towards neutral pressure than option #1 i described. Still, you can normalize it to neutral pressure by running intake fans at lower RPM, compared to exhaust fans.
All-in-all, poor PC case in terms of airflow.