Board Game Arena

Hello everyone, yesterday I was playing this game nad got into a situation where only one tunnel was still open and it was on a fully blocked 2x1 slot, the only piece that could fit is was the C shape tile and I didn't have it on my hand. in this situation am I forced to keep redrawing until this piece shows up or do I lose the game after certain amount of swaps?

If the fitting card is still in the deck, you have to redraw until you find it. If not, the game ends in defeat automatically.