Thomas Tuchel has made a huge mistake that could cost England World Cup glory

England have made it through to the knockout stages of the World Cup as group winners following their 2-0 victory over Panama on Saturday night.The Three Lions were, in the first half at least, just as uninspiring as they were against Ghana earlier in the week with Thomas Tuchel's men struggling for consistency.But goals from Jude Bellingham and Harry Kane after the break secured victory, setting up a crunch clash with DR Congo on Wednesday.For England, the win is what counts. TRENDING Stories Videos Your Say They remain unbeaten in the tournament and with a favourable tie up next, will fancy their chances of reaching the round of 16.GB News will now take a look at four talking points from the fixture.1) Tuchel has made a huge mistakeWhile England won, there is concern for young defender Jarrell Quansah.The Bayern Munich defender started in the absence of the injured Reece James but lasted just 59 minutes before going off with an issue himself.With England already short at right-back following the withdrawal of Tino Livramento shortly before the tournament, it gives Tuchel a dilemma.And it also makes his decision to overlook Trent Alexander-Arnold the wrong one, too.LATEST SPORTS NEWS:Rory McIlroy at risk of suspension ahead of The OpenRoy Keane tears into Thomas Tuchel after England World Cup win over Panama - 'Hasn't got a clue'Alan Shearer calls out two England stars after Panama win as Thomas Tuchel left furiousThere was always going to be some sort of problem with James, who has been plagued by problems in recent years.And England are certainly lacking strength in depth in that department at the current moment in time.Quansah is a centre-back by trade and was played out of his natural position. That, alone, suggests the Three Lions have left themselves short.With England now facing the possibility of being without their only two right-backs, a fully fit Alexander-Arnold will be wondering what could have been. 2) Bellingham's brilliance shows he's England's main manWhen England needed inspiration on a tense night, it was Jude Bellingham who stood up to be counted.The Real Madrid superstar was a cut above the rest, driving the team forward from midfield and breaking the deadlock when frustration was beginning to mount.It is now clearer than ever that Bellingham, not Harry Kane, is the true heartbeat of this side.He plays with a maturity that belies his years, and his ability to drag the Three Lions through difficult periods is reminiscent of a young Wayne Rooney or Bryan Robson.If England are to go all the way and lift the trophy, they will need their talismanic midfielder to stay fit and firing.On this evidence, everything good about Tuchel’s team goes through him.3) Kane puts Ghana disaster behind himHarry Kane came into the Panama clash under immense pressure after a truly anonymous performance against Ghana.Critics were sharpening their knives, with some even suggesting the captain should be dropped in favour of fresher legs.But Kane did what he does best: silenced the doubters. His second-half goal was a classic poacher’s finish, showcasing the elite instincts that have made him England's all-time record goalscorer.It wasn't a perfect performance, and he still looks a yard slower than usual, but finding the back of the net will do wonders for his confidence.If the Three Lions are to conquer the world, they need their skipper at the peak of his powers.4) England must improve from hereWhile seven points and top spot in the group looks great on paper, nobody should be fooled by the scorelines.England’s first-half displays against both Ghana and Panama were particularly lethargic, characterised by slow passing and a distinct lack of creativity.Against better opposition, Tuchel's side would have been severely punished.DR Congo will provide a unique, physical test on Wednesday, and the knockout rounds leave absolutely no margin for error.The Three Lions have the talent to go all the way, but they must find another gear quickly.Pragmatism can only take you so far. If England want World Cup glory, the handbrakes need to come off. Our Standards: The GB News Editorial Charter