Oh my, this is one of the best comments I've received yet.
Thank you so much for your sincerity and constructive criticism, I will apply these advices in the future. A lot of people are scared to sound too rash or negative, yet we still need honesty to progress, so my respect for doing just that.
As for the chords from "Their Freedom", they are quite simple: Some minor chord + 7 + 9 + 11 ==> a major chord half of a step lower with the same* upper voicings (you will DEFINITELY hear what needs to be lowered, haha. (It is the 9th, by a semitone)). Then just repeat it as much as you want to, but transpose the pattern by a major third down every time. I basically kept going down in big leaps on the circle of fifths, so that it evokes this "dread-like" feeling. (A slow pitch automation might also help, if you are after that specific feeling)
Thank you for listening, reacting and giving honest opinions. You are amazing.
Have fun and see you :)