The Reds defender was on press duty ahead of Tuesday night's Sky Bet Championship trip to face Blues.
The Austrian began by admitting frustration was his major feeling when looking back to Saturday and the 2-1 defeat at Blackburn Rovers, in a game the Reds dominated.
"It was a disappointing result for us of course." Michael explained.
"We were upset in the dressing room after the game. We'd had a clear plan and executed it. We were good in the game. Our pressing was good, we made it hard for Blackburn and created good chances to score.
"But we don't take the lead and then we concede before half-time. We should have made a tactical foul in my opinion. So they took their opportunities when we couldn't and this is football."
Sollbauer refuses to get carried away with back-to-back defeats and reckons the Reds have been performing well since the arrival of Valérien Ismaël. But like his Head Coach, he acknowledges the need to be more clinical in both boxes if Barnsley are to get back to winning ways.
He told us: "We defend as a team. It's not just about the centre halves. It starts from the front, and I know we work really hard as a team. So we have to be strong and clear in our minds.
"The performances have been good, we're in a good way and want to keep growing together. But as the coach says, we need to be more ruthless and get our rewards from games."
Onto Tuesday night and our first of two trips to St. Andrew's this season, and Sole admits there is similarity between Blues' threat and that posed by Cardiff City at the start of November.
That was a humbling loss for the Reds, and the defender suggests tomorrow night gives his side the chance to make amends and prove they've learnt from the mistakes made in the Welsh capital.
"Tomorrow will be another big test. It reminds me of Cardiff and we said after that we had made a bad performance and would learn from it.
"So tomorrow in Birmingham is the right time to show that.
"We must focus on Tuesday night and getting three points."