Andy Robertson admitted he was furious with the late collapse against the Netherlands - with the captain insisting that Scotland were lucky not to lose by six.
Despite playing well for the first hour of the friendly in Amsterdam, the Scots trailed 1-0 courtesy of a first-half strike from Dutch midfielder Tijjani Reijnders.
Lawrence Shankland then missed a glorious chance to equalise in the second half, before the wheels well and truly fell off for Steve Clarke’s side.
Scotland shipped three more goals in the final 20 minutes, meaning they have now gone six matches without a win.
‘I’m feeling anger and disappointment,’ said skipper Robertson. We can’t come away to these big teams and play the way we did.
‘We have completely opened up at the end. The fact we’ve walked off 4-0 is unbelievable. It’s impossible for it to happen. We need to have a look at it.
‘We can’t keep doing this. In the last couple of games, we’ve shipped quite a lot of goals. People looking at that result will think it was one-sided. We need to take a look at it and sort it out.
‘In the last six games, we’ve dropped our standards. It could have been 6-0 at the end. We need to get back to winning ways.’
Robertson stressed the importance of showing a killer touch in front of goal as the Scots continue their preparations for this summer’s Euros in Germany.
They will now host Northern Ireland at Hampden on Tuesday night, with the need to get back to winning ways now crystal clear on the back of this result.
‘At this level, it’s all about putting the ball in the back of the net,’ said the Scotland and Liverpool lef-back. ‘Lads can miss chances.
‘What we can’t do is open up the way we did. That’s a collective thing. We opened up too much and ended up walking off at
Read on m.allfootballapp.com