I’m beginning to lose patience with your logic, because, with respect, you appear to have lived your entire life in a small ‘deprived’ town, and you let your anger blind you.
Firstly, you need to understand the way the world works - its a complex collection of geopolitics, personal fear and greed, strategic competition, macroeconomics, trade conflicts - I could go on, but the tectonic plates that periodically shift, will continue to do so.
When people vote, they do so premised on who they perceive will best serve their own interests - I say perceive because manifestos have a habit of being nonsense.
Your wish for some kind of utopia is therefore destined to fail. UK politics is naturally short-term, as are tenure of most politicians. Labour will fail to deliver, they will not survive more than one term, and we shall simply rinse/repeat.
Now, to my point, you can either play the hand you are dealt as best possible, or you can continue barking at the moon.
Its your life.