JACKSONVILLE, Fla. — If the ultra-young Cleveland Browns were just outmanned or ultimately undone by a couple of penalties and turnovers, it would be easy to chalk up their Week 1 loss to expected growing pains versus a quality opponent.Because the Jacksonville Jaguars had completely drowned the Browns by the second quarter Sunday, it’s hard to know how much growth can actually be found.New coach Todd Monken’s debut was a mistake-filled mess. And because the Browns appeared completely unprepared defensively and had a comical run of penalties after their remade offense had a few series to settle in, an uncomfortable feeling lingers beyond Cleveland’s ongoing youth movement and perpetual quarterback drama.The final score was Jaguars 34, Browns 10. It could have been 51-3 had Jaguars coach Liam Coen wanted to keep his foot on the gas.Entering the day, the new-era Browns were 3-23-1 in season-opening games and, in total, 78 games under .500 since team owner Jimmy Haslam took over in 2012. Yet, it’s still somehow fair to say that Sunday’s loss was embarrassing even by this franchise’s low standards — even though it was just one game for Monken, his brand-new offensive line and his first-time coordinators.“We never got into a rhythm,” Monken said. “It’s so hard to judge. It’s so frustrating (for) you watching it, us calling it, us doing it. It wasn’t good enough. But it wasn’t just one player. We’ve all got to own it.”Top Plays from Browns @ JaguarsCleveland quarterback Deshaun Watson’s return was as bad as everyone outside the Browns’ hierarchy expected it to be, starting with him throwing an interception on the game’s first series. The Jaguars averaged about 8.0 yards per play on their first two series in building a two-score lead that was obviously insurmountable, as Jacksonville quarterback Trevor Lawrence showed off his arm strength and took a handful of layups in throwing to spaces the Browns left unoccupied.It was too easy for the home team and clearly deflating for the Browns, who started the game with two quick first downs before the interception but then couldn’t gain any offensive traction.“We didn’t give ourselves a chance,” Monken said.When it was 17-0 in the second quarter, the Jaguars had run 27 plays as the Browns had 28 total yards. And as bad as Watson was at creating anything positive, the ongoing quarterback struggles might have overshadowed the Browns’ defense, which played the role of an occasional speed bump as Jacksonville rolled up 360 yards and scored on six of its first seven possessions.Monken didn’t want to go too far on the defensive issues until he reviews the film, but when he does, he’ll see — again — that Jaguars receivers ran wide open for three quarters. Parker Washington was Lawrence’s first target and scored the first touchdown, and the machine kept moving even as Brian Thomas Jr. left in the first half due to a shoulder injury after posting three catches for 40 yards.The Browns didn’t cover the other guys, either. On the 32-yard third-quarter touchdown to Jakobi Meyers, Lawrence dodged the rush and Meyers basically camped out along the back line and waited for the throw to reach him.The Browns’ NFL-best streak of 46 games without allowing a 300-yard passer lives on because the Jaguars were so far ahead they removed Lawrence from the game and replaced him with Nick Mullens, a practice-squad call-up who started a game for the Browns in December 2021.At halftime, Lawrence was 13-of-18 for 166 yards and three touchdowns. He finished 18-of-23 for 245 yards and four touchdowns. He was sacked once, but for most of the day he had plenty of time to scan the field and find open receivers. Lawrence had seven completions for more than 15 yards Sunday — more than half of them in the first quarter — while the Browns had one play of more than 15 yards in the game’s first three quarters. One.The Browns got 145 of their 272 yards in the fourth quarter. The Jaguars went up 34-3 on a Cam Little field goal with 1:48 left in the third, and Lawrence didn’t return to the game. Cleveland’s only touchdown came on a Watson deep ball to rookie Denzel Boston with 1:52 left. Watson finished the game 16-of-22 for 205 yards, one touchdown and one interception.After his interception on the game’s fifth play, the Browns punted on three of their next four possessions — and KC Concepcion lost a fumble on the other.In about 20 minutes of game time from the interception to their possession that started with 1:32 left until halftime, they ran 13 plays for 17 yards and got one first down. When they got the ball with a chance to salvage something at the end of the half, they got to the Jacksonville 39-yard line before posting a sequence that went holding penalty on Zion Johnson, false start on Tytus Howard, delay of game penalty, pass for 6 yards and then another holding call on Johnson.Boston was targeted four times but never factored before the late touchdown. Concepcion made some plays in the fourth quarter, but the Browns couldn’t run, couldn’t sustain anything and got little from running back Quinshon Judkins or tight end Harold Fannin Jr.At times, Watson was running for his life — and at others, it was unclear where he was trying to go. Things went from bad to worse quickly — and then they went to full-on meltdown mode. When it finally was over, Monken tried to praise his players’ effort and cite the strong fourth quarter. But the Browns didn’t just come out flat, they were sloppy and got immediately flattened.“This is the NFL,” Monken said. “I would just say that if you do this enough, you’re going to get humbled. It doesn’t matter what team in the NFL. We didn’t play well enough, and we didn’t coach well enough, and that’s always going to be it.“You’re going to get tired of me saying that. It’s a ‘we’ thing. It’s not a ‘me,’ and it’s not a ‘they’ thing. It’s a ‘we’ thing. And we’re going to fight like hell to get better.”Four quarters in, that seems like one hell of an uphill fight.