I will believe it is a skill that plays those rolls, if you can do it for several sessions but I don't want to temp you to do that, just enjoy your winning its hard to win a dice game its quite risky if it is a big amount but it seems you are comfortable on your bet, you can brag that you get lucky but saying that you did it because of skill is a fallacy.
I have not encountered here yet that boasted that they have skill in a dice game, it is just they got lucky in their few sessions