Labour need to figure out why and do something about it. Because there's no point in them losing and blaming people for not voting for them. It's their job to win elections, and if they can't do that, they aren't fit for purpose
The entire print media being owned and controlled by Tory backers, and therefore entirely geared toward smearing Labour politicians and policies is a significant hurdle which Labour genuinely can't do much in the way of anything about.
It's become increasingly apparent over the previous two GE that the Conservatives are fully onboard with US style smear-campaigns where you say absolutely nothing about yourself, lest the public gain some inkling of how odious and vacuous you actually are, and dedicate the entirety of your efforts towards smearing and slandering your opponent instead.
It's unfortunate that in the UK a significant number of people still read newspapers and take them on face value as publications that merely report news, rather than seeing them for the biased propaganda mouthpieces that they are. Thankfully print media circulations are in an inevitable death-spiral, but until the print versions or rags like the Mail, Express, Torygraph, Times etc finally expire, it's not a battleground that Labour can fight on with anything like an equal footing.
The last two Tory PM's have both fought an election campaign where they did their level best to be completely invisible and unchallengeable throughout, and both came away with a material victory. I don't see the Tories changing tack for 2024, and no doubt utterly useless clowns like the BBC political lot will stand by and watch it happen yet again. This is going to be the way of it with the Tories from here on in, i.e. never mind about us, just how awful are Labour? and the UK public will lap it up time after time and continue to be the turkeys that vote for christmas.