The data is also as close as you're going to get to accurate in the uk. Just on the topic of comparing graphs.. Again you have made so many assumptions.
Some countries have different methods for measuring covid deaths. For example you have to have tested positive before you died vs autopsy after vs if you died in a care home automatically covid.
I think you're being disingenuous, but there are few raw facts that are worth noting. First, UK excess deaths are worse than the official COVID figures would suggest. This is under-reporting - and it's actually public policy to only include those who die within 28 days of being diagnosed with COVID, so it's not surprising[1].
[1] This policy has some good technical reasons behind it, but its political use is still a bit gross.
This data is still not accurate, excess deaths is a very lagged dataset. Countries that have been upfront and honest with their numbers have high rates, another such one is Belgium. The difference isn't the government response it's the data.
Some countries have different methods for measuring covid deaths. For example you have to have tested positive before you died vs autopsy after vs if you died in a care home automatically covid.