And everyone who watched your Gold match agrees that you played at a Gold level in that match and made poor decisions that prevented you from winning. If you were looking for a match to demonstrate that you would lose in Gold even when playing at a Diamond or Masters level, you should not have posted one that even posters who agree with you that the matchmaker is rigged described as you playing at a Gold level and making poor decisions that prevented your team from winning.
The fact that you assess that match as one in which you played at a Diamond/Masters level undermines your argument, because it demonstrates that you cannot differentiate between Gold play and Diamond/Masters play. So whenever you say something like, you can play at a Diamond level in a Gold match but the matchmaker prevents you from winning, people will recall that you think poor Gold play is equivalent to Diamond/Masters play.
It’s counterproductive for you to remind people of this.