The Scots were subjected to heavy late pressure in Warsaw, having previously fought back from a goal down to lead before Arkadiusz Milik's strike in the 76th minute levelled the scores again.
"It was a fantastic game and a fantastic atmosphere. We're pleased with a lot of things and disappointed too. We played attacking players and feel that's a strong part of our team; I believe in them," he told Sky Sports News.
"The surface was heavy and they did well, considering. They stuck at it. It's the hardest group. We've had four points from two games and two good performances away from home and a terrific one at home to Georgia."
Scotland are not in action again for a month, when they host the Republic of Ireland.