Scotland are languishing at the bottom of World Cup qualifying Group A with just two points from six games and have no chance of making it through to next summer's tournament in Brazil.
However, Snodgrass thinks Scotland have deserved more from some of the games, particularly the two fixtures against Wales which ended in 2-1 defeats.
The Norwich City midfielder insists there is enough quality at Gordon Strachan's disposal to have high hopes for the future, and he is looking for a good performance in Zagreb.
"Seeing what the boys do at Premier League and SPL level, I think it is just a matter of time before all that comes together and you see things going our way," Snodgrass said.
"We've been very unlucky through this campaign. People may say different and that we didn't deserve it, but I think we should have beaten Wales home and away, and we could have got a better result against Serbia as well.
"But it is all ifs and buts. We are where we are because we didn't take our chances, so we will try and put those things right come Friday."