The Netherlands coach conceded that his side did not deserve to qualify for the latter stages of Euro 2012 after the Oranje lost all three of their matches in Group B
The Netherlands, which came into the tournament regarded as one of the favorites, finished bottom of Group B after failing to take a single point from its three games.
Despite losing to both Denmark and Germany, the Netherlands went into its final encounter with Portugal knowing that a win would give them a fighting chance of qualification. Yet two goals from Cristiano Ronaldo soon dashed any hopes that van Marwijk's men had of reaching the quarterfinals.
"I can't deny that this is a major deception for us," Van Marwijk told NOS.
"In all the three games we started well, but we couldn't hold it, just like today. We came up front with 1-0 but we need to hold on after a good start. We weren't able to do that again.
"We didn't have the good shape in this tournament to create goals. We give away chances too easily and then we concede goals. The first match against Denmark was very important. After that match we became insecure."
Van Marwijk was hoping the Netherlands could repeat its form of two years ago when it reached the 2010 World Cup final, but the 60-year-old admitted that the performances in this tournament never quite reached those standards.
"I knew all along that it would be very hard to go to the quarterfinal," he admitted. "I had the hope that we could bring another performance like two years ago at the World Cup.
"When you look at the age of the team, you know that we couldn't get any better. We only have ourselves to blame."
The Oranje's performance has placed a question mark over the future of Van Marwijk as head coach but the Netherlands boss insisted that he would not be drawn into commenting on the speculation.
"I'm not thinking about my future now," he insisted. "I'm busy with a lot of things, but not with that after a match like this."