My take is that the first accident (race 3) was totally your fault, really. The guy had your inside and I believe it was so fast that you didn’t notice until you were already too committed to take the corner as if he was not there. Lack of perception, I would say.
As for the second accident (in the final), at the end of the day is what is called “a racing incident”, but your opponent surely should have been more polite and kept room enough for you to take the corner side-by-side with you, and let it be decided either at the following straight or on the upcoming corner after that.
That’s my view. Cheers, Carlos