We won the possession because Belgium let us win it. It was 53-47 Belgium in the first half and 64-36 US in the second. Belgium didn't need to score, they knew they had another game in 4 days, and the knew we posed basically no threat offensively to score. So why would they press to try to win the ball back when they can just let us have it and do nothing with it?
And that's the only stat we won. 2.15-0.67 in xG, 15-7 total shots, 7-2 shots on goal, 21-12 touches in opponents box, 4-0 big chances created. All in favor of Belgium. The second half was pretty even because Belgium allowed it to be. They had more good chances to score (1) in the first minute than we had in 90. They dominated the first half and didn't need to do much the last 1/3 of the game.
Our goal was fluky as well. There's a decent chance Courtois saves that free kick if there's no deflection. And even if Belgium had two fluky goals, they also had multiple other chances that could very easily have turned into goals. Oh, and they didn't even start de Bruyne (had started all four games) and Doku (started 3 of 4).