Town have scored just one goal in 450 minutes of football, poor final balls and woeful finishing costing them against Paul Tisdale's men.
Alexander said: "I'm disappointed because overall I think we created the better opportunities around the final third.
"We needed a break, we made some good chances, got some good set pieces but just couldn't find that final touch.
"We were never in any danger of losing the game, not until the last few minutes when there was a little flurry of corners from them but I thought it would have been a travesty if we'd have lost.
"We did enough to win the game and, looking at what we've created, I think the goals will come."