To pair a lightweight like Alli in midfield with another little boy like Lingard is a joke. If that’s two of your three in midfield you’ll never beat a decent team. Lingard has more to his game than Alli and I wouldn’t write him off but he shares some of the same weaknesses.
I think I wrote something similar on here during the World Cup. I found/find it difficult that any side could include so many not-a-striker-but-also-not-a-midfielder types as Alli, Lingard and Sterling.
Maybe it's not actually possible against a side of any real quality.