Putin definitely contributed massively, but this is a multifaceted issue without a silver bullet. Climate change affecting farming yields, post-COVID economic stress, governments repeatedly committing economic suicide, late stage capitalism eating itself, the list goes on.
This may be controversial but I think another factor that should be included is the culture we have built (and capitalism has built) around consumption.
Damn, I didn't realise Putin was a Tory, their rule for over a decade has been a very significant driver of our woes.
Though it's important to note that what the other user said is very true, this is a multifaceted issue.
Still, from where I'm sat, we can start improving things by freeing ourselves from the Tories, and if possible burying their evil "Let's just make the rich richer" political party for good.