You defend the Tories far too much. They delivered zero of their promises so the voters abandoned them. It’s probably gonna happen the Republican Party too if they keep failing.
Instead of creating a new party or running as an independent, Trump instead reformed the Republican party... And it worked... Not everybody in the Republican party supports Trump, but they voted for him because he was the obvious choice. If Trump had created a new party or ran as an independent... Kamala would now be the new President.
Creating a ‘new’ party merely splits the vote and allows the Labour party to maintain power.