I checked out the first replay (race B) to see the incident there and saw that Eisbaer took a fair line leaving room (assuming you would take the corner properly) to you on the inside while you missed the apex and went into him.
As for the second replay (race A) and the first incident, clearly your fault. You were passing kiyoshi and for some reason just went straight when you clearly could have kept turning right and went along. The second incident, you braked in a place where you could have just gone along and easily passed SproG.
Also what I see from you is clear ignorance. You didn't apologise after the ruining others' races, later you just gave a general apology for "may" having crashed others. Eisbaer was giving you perfectly good advice (which at this moment you clearly need). I advise you to review the replays from the others' point of view to understand what you did wrong. When racing you also need to think about other racers.
Maybe the 999 ban was a bit too much, but considering your attitude, I'm not surprised.
Good day.