He hinted that Mercedes ignored him to prioritise Hamilton, but Rosberg also highlighted positives such as his position at the top of the drivers' standings and the performance of the car in his excellent start to the season.
"I am still in the lead in the Constructors Championship and that's good considering the whole weekend went really bad for me," he told reporters.
"I had no communication with the team, so they had no idea what I was doing. I am pleased with second and I just look forward to Spain now and getting back to having everything working.
"It really is a pleasure to drive this car at the moment, it is so quick and it increases the enjoyment level even more."
Rosberg is four points ahead of Hamilton, having secured podium finishes in all four races this campaign.