All of that can be said of almost all other countries though. I live between Italy and Switzerland currently, pretty much all of what you say above is true here. France can't get tests sorted out, Spain we know is in a mess, even Japan is now running into trouble, and the less said about the US the better. You are talking about some of the most developed nations in the world there. The way people talk in this thread you would think the UK is a total disaster and the virus is just a blip to everybody else. The reality is the UK is handling it about as well as everybody else - the virus took the whole world by surprise.
None of that is because of the budget though, it's because the management keep wasting the money they do get on overpriced agency nurses, ridiculous procurement processes and ill-advised projects. That's been the point all along. The money is there but we are terrible at spending it.
Compared to all of our peer countries the government spends roughly similar, that's really not debatable (especially if you forget private add ons and co pays, which the UK has very little of). We don't stand out for overspending or underspending in any way. Again, like above, the whole point I am making is that if you listened to this thread you'd think the UK was being forced to work on a shoestring, and it's just not true.
Even if we did increase the budget, above 2500 spend per capita (we are around 3,000) there is little evidence that increases have any effect on health outcomes. 2 of the 4 'healthiest' countries spend less than us, and 2 of the 4 top spenders have worse health outcomes than us. If anything, looking at those figures it might suggest a reversal over a certain point as bloat sets in.
edit: anyway, this is all too much politics now. This will be my last post on it.