Yes I agree it's tough.
The cost of housing is astronomical compared to when your mother was young.
My parents bought their house in inner London for £16,000 40 years ago. They were public sector workers in their early 30s and a 4 bed townhouse in London was well within their reach. (Even though there had just been a boom: 3 years earlier they would have paid just £5,000 for the same house). The man they bought it off paid £1000.
It's now worth the best part of £1,000,000, and it would be unimaginable for a couple of young public sector workers to afford it.
It is absolutely the fault of government (this one and the last) that ordinary working people are finding it so hard to pay for basics like housing, as it is within the government's power to do things to change it.
If they cared about the quality of life of ordinary working people, a good policy would be to embark on a program of building social housing. This would be an investment for the tax payer, it'd bring down rents and house prices overall, create jobs, ensure many children are properly housed (rather than living in insecure accommodation, which has been proved affect physical and mental health, educational progress and ultimately life chances), help with the ongoing homelessness crisis, ensure key workers such as NHS staff can actually afford to live near the jobs, and overall make for a better society for pretty much everyone (except perhaps the landlords, property investors & big business - although they could just invest their money elsewhere!).
So YADNBU to put the blame on government for rents being so high. They could do something about it but they choose not to. (They, their friends and big business make a lot of money out of the high rents and house prices though, hence the lack of interest in such policies IMO).
Yes there are choices you can make to improve your particular situation, but it goes beyond that - the choices you face are symptomatic of a wider problem.
Anyone saying it's just down to you to make better choices either just wants to pick a fight doesn't really understand the role of government IMO - or believes in just leaving it to market forces, which I fundamentally disagree with.