MILWAUKEE — Giannis Antetokounmpo says chemistry issues may be contributing to the Milwaukee Bucks’ recent penchant for lopsided losses.The Bucks fell 122-102 on Wednesday to an Oklahoma City team that was missing a handful of rotation players due to injuries. The Bucks have dropped four of their last five games. Each of their last three losses was decided by at least 18 points.Antetokounmpo was asked after the game against Oklahoma City if he sees any common threads to the blowout defeats.“We’re not playing hard,” Antetokounmpo said. “We aren’t doing the right thing. We’re not playing to win. We’re not playing together. Our chemistry’s not there. Guys are being selfish, trying to look for their own shots instead of looking for the right shot for the team. Guys trying to do it on their own. “At times, I feel like when we’re down 10, down 15, down 20, we try to make it up in one play, and it’s not going to work.”Milwaukee’s string of nine straight playoff appearances is in jeopardy midway through the season, with the Bucks (18-25) 11th in the Eastern Conference standings. They haven’t won more than two games in a row at any point this season.Now they’re going to have to get accustomed to playing without Kevin Porter Jr., who ranks second on the team in points per game (16.8) and first in assists per game (7.4). Porter has an oblique strain …