Defensive tackle Malik Jackson came into Sunday’s game against the 49ers ready to show he was deserving of his first career Pro Bowl selection announced last week. Yet, after suffering an embarrassing 44-33 loss on Sunday at Levi’s Stadium, he had nothing to say. Jackson struggled like his teammates and his frustration was visible in the locker room when he dressed in silence without speaking to reporters. He also lost his composure on the sideline in the first half when he got into an ugly verbal confrontation with nickel back Aaron Colvin in which they had to be separated by teammates. In one of the few times this season, the Jaguars’ defense unraveled. Now, it’s a matter of urgency to make sure it doesn’t happen again, especially with the playoffs looming. At 10-5, the Jaguars close out the regular season this Sunday at Tennessee. “I hate to say this, but we needed this,” cornerback A.J. Bouye said. “It humbled a lot of people. We recognize it and we’ve got to get ready for (Tennessee) and just get it rolling going into the playoffs. “They’ve (49ers) got a hell of a coach, (Kyle) Shanahan,’’ Bouye said. “He really outschemed us. We tried to adjust, but even with the formations they had we couldn’t adjust to the stuff they were beating us out.” Despite coming in against the 49ers as the top-ranked defense against the pass, the Jaguars were shredded by quarterback Jimmy Garoppolo, who passed for 242 yards and two touchdowns.