The 33-year-old midfielder is widely considered the favourite to win the honour, having already won the Golden Ball in Russia and UEFA's best player award this summer, but Modric said it was definitely not his focus at the moment.
"For me, the important thing is the collective, winning the prize is not what obsesses me the most," he said after Croatia's 6-0 loss to Spain on Tuesday.
"If I do not win it, nothing happens."
Zlatko Dalic's men were comfortably beaten in Elche, where goals from Saul Niguez, Marco Asensio, Rodrigo Moreno, Sergio Ramos and Isco, along with a Lovre Kalinic own goal, saw Spain sweep to another Nations League win.
Modric rued his team's display, highlighting their capitulation after going 2-0 down just past the half-hour mark.
"A very tough game. We started the game in the first 20 minutes very well, we had two or three, let's say, clear chances. We didn't score, and when we conceded the first goal, and especially the second, we fell apart," he said.
"We started playing each for themselves, not helping each other, staying far from our players, and against a team like this that's deadly. At the end, the result is poor.
"It was a hard loss, but we need to draw lessons from this. If we aren't at 100 per cent, if we aren't in every game like we were at the World Cup, it's hard to play against any team, particularly teams like Spain."
Croatia will resume their Nations League campaign on October 12 when they take on England, in what will be a repeat of the 2018 World Cup semi-final.