Soo, in the morning I actually investigated the ballast furthermore, appears voltages and amps are all fine, the only issue was that this capacitor is not built to be nearby the heating igniter, which in fact produced all the issues in the first place!
What I did was extract the capacitor to a safe location far from the heat radius of the igniter. The capacitor is not swollen at all, it's silicon coat is a bit damaged, so molybdenum extraction is a potential danger, but i also contained this problem repairing the coat, the igniter itself is a very old stuff, so it indeed does heat up a lot under many hours of usage so I added cooling system to it to sustain the average 100 Celsius it is capable of reaching from 130 Celsius maximum temperature. After the overhaul was complete, I started the lamp and:
1st - The heat is contained, in fact an additional overheat was conducted by electro-magnetism committed between the capacitor and the igniter. With the additional cooling system and properly fixed integral scheme heat is no longer a crucial factor in any manner.
2nd - The noise is contained, there is yet this little buzzing you hear, but you can't really notice it in a perfect silence and 3 meters away from the lamp!!! No more ultra strong humming at all!
3rd - Lol ... Flickering stopped totally, there is not even a singular flick anymore.
4rd - Nothing to do about it .. But it all eez fine!
I want to thank everyone who participated in this thread and helped me fix my problem! I hope to never be able to return the favor, don't get me wrong, I hope you guys never have any trouble! Happy growing everyone!