Marcus Morris on the Celtics’ struggles: ‘I can’t really put my finger on it’

Marcus Morris reacts to a call during the fourth quarter of the game against the Brooklyn Nets.After the Celtics won four straight games to kick off 2019, it seemed like the underperforming team had turned a corner.

But inconsistencies have only continued to plague the C’s, who — with a 109-102 loss to the Brooklyn Nets Monday night — return home having dropped three straight on their most recent road trip. Just past the midpoint of the season, the 25-18 group sits uncomfortably as the East’s fifth seed.

“It’s tough to win four straight and lose three straight,” forward Marcus Morris told reporters in Brooklyn Monday. “I would be lying if I said we knew our identity because the identity of a…