Despite taking the lead, Northern Ireland did not register a target shot throughout the game.
O’Neill added, “In terms of where we need to get a team, we need to be able to keep the ball a little better than we get when we won back, may find a little more in terms of possession and this will help us have a greater threat.”
Knowing that they will face Germany in the World Cup qualification in September, O’Neill consciously became friendly against a higher level of opposition than his team faced by promoting the third level of the League of Nations.
Saturday’s reverse was just their fourth in the last 14 games, a race that started with a 2-0 win over Denmark in Belfast in November 2023,
In Losses to Spain for 12 months and against Sweden in March, Northern Ireland sent five goals, but although its great advocate to represent a sign of progress in Copenhagen, the game against Iceland will represent a different challenge.
Visitors, however, arrive in Belfast, driven by a victory over Scotland on Friday night.
“We need to be better with the ball. So, as we left as a team it will be a little different,” said O’Neill.
“The teams are another similar level, let us be honest, so that in themselves help us, although they have a very good result against Scotland in Hampden Park and played very well.
“Therefore, it will be a difficult test, but it’s just a different game for us. It’s a game where we hope to have more of the ball and responsibility, and the burden is about us obviously taking the initiative in the game.”
