The San Francisco 49ers struggled with injuries in Thursday night’s game against the Los Angeles Rams, losing two more defensive players. Linebacker De’Vondre Campbell, one of the team’s last options at the position, faced backlash for refusing to play late in the game. ESPN reported that the team lost linebackers Dre Greenlaw and Dee Winters to knee and neck injuries during the third quarter. Head coach Kyle Shanahan turned to Campbell to enter the game, but the 31-year-old veteran declined the invitation, leaving the team’s last healthy linebacker, Demetrius Flannigan-Fowles, to replace him. Campbell refuses to play as 49ers lose two linebackers to injury “He said he didn’t want to play today,” Shanahan said. Campbell spent the fourth quarter in the locker room without playing a single snap. The 49ers’ 12-6 loss at Levi’s Stadium left the coach and several teammates visibly upset. In a post-game press conference, Shanahan did not explain why Campbell refused to play but...