Autofilled during promos [CLIENT]

I was in queue to play my promos to Plat 4 when the first match doesn't get accepted. The queue then instantly pops a second time. Normally when this happens I get autofilled a lot of the time. However, I'm in my promos and also autofilled protected. So i accept the queue again and see that I've been filled support. We ended up losing the game and I can't help but feel it was because I wasn't in a carry role. I just want to win my promo, but now since this bug occurred I need to win both games in a row. It just really messes with you when dumb things like this happen and cause you to feel like it lost you the game.