Scotland boss Gordon Strachan has rued his side's mistakes in their 2-0 loss to Serbia in their World Cup qualifying clash.
A brace from Filip Duricic condemned the Scots to their fourth defeat of their campaign and leaves them rooted to the bottom of Group A on just two points.
"When it's 1-0 you have always got a chance of winning but it seems to happen too often that when one goal comes, a second follows," Strachan told Sky Sports News.
"It's a shame for everyone who makes a mistake after putting a lot of good work in. It's not dishonest mistakes.
"It's easy to work on people who are good people. It's not a quick fix to get as strong and as technically gifted as that. But there's lots of things I know I can work on."
Scotland are next in competitive action against Croatia in June.
