You do have this habit of repeating these same things regardless of what anyone says to you, but I'll give it another go.
Most people know the GE was lost due to more than brexit, however it's clear brexit was the major factor, not Labour policies and that is important.
Corbyn is going, not many give a shit about him anymore but notice there is a campaign already growing against Starmer and he isn't even Labour leader yet. The tory propaganda machine is getting up a head of steam for the next 5 years.
Regarding your continued obsession with "failing to deal with AS". You've been asked before but never explained how does Labour stop the tory media reporting whatever they choose? They can report any lie they choose to with impunity. Fact is, I have never heard anyone mention antisemitism outside of media reports and this forum, let alone as something on their mind ahead of the GE. Why do you believe it was an important factor in the GE other than you (and others) were told it was as part of the general anti-Labour smear campaign and that made it so?
You're not alone gassor, many people have bought into the anti-Labour/anti-Corbyn propaganda and to that extent, Corbyn is a factor. "Corbyn likes terrorists". "Corbyn is a Marxist", "how can you vote Labour, look at that Diane Abbott woman", "Labour will steal your house", "where will the money come from for those Labour promises", "why don't Labour sort that AS problem", "Labour will tax you to oblivion and give it all to wasters, "Boris is a really nice man". All relentless tory propaganda. They bought the election, gassor.
The smear campaign against the next Labour leader is already underway.