Flynn, who watched as the Saddlers slipped to their fourth defeat in five games, insisted his team should have taken the lead just five-minutes into the match as George Miller hit the back of the net..
However, that wasn't to be, as Flynn and the 264 Saddlers fans who had made the trip to the People's Pension Stadium were left disappointed as one of the assistant referees pulled play back for an apparent offside.
As if to further frustrate the faithful, the home side went on to take the lead via Isaac Hutchinson midway through the second-half, with the Red Devils ultimately securing all three points.
Speaking to members of the local media, Flynn was first asked whether his side deserved more form the game, he said; "Yeah, I thought we did.
"The goal we had disallowed was wrongly disallowed. George Miller was onside - so that's frustrating.
"But the chances we created at the end as well, we have to take those chances.
"I've said it even after we've won games, we didn't kill teams off because we didn't take enough chances and this is why it's important to do that, because it comes and bites you on the backside.
"The post wasn't our friend but I believe you make our own luck as well. We've got to see that game out.
"If we're not going to score at their end, we have to make sure that we don't concede and their goal was a little bit too easy for me.
"I don't like losing but there's a way to lose and I haven't come out here screaming and shouting, or ranting and raving.
"We could have won but they put a shift in and a few players came in who haven't played."