Buying a place down South is near impossible, but up North it's definitely achievable. I have friends in their 20s who have bought their first houses. One bought on his own, others were in couples, but the couples went for 'second step on the ladder' houses - 3 bed semis.
I started out in a crappy, dead-end job on what wouldn't even be minimum wage (if you index linked it) today. I lived with my parents, was sensible with my cash, and saved - hard. I bought my first house after almost 5 years. It was a small 2 bed mid-terrace, cost 5 times my income, and I had to put down a deposit of over 30% because the maximum mortgage I could get would have been nowhere near enough otherwise. My household goods were seconds or second hand, but it's what I needed to do.
Too many people now go to university. It often involves leaving home and paying rent (not to mention the debt), a cycle that some remain in after uni. Less academic people simply shouldn't go - they don't benefit enough. They miss out on the late teens/early 20s working (and income) and end up at 21 in a job they could (should) have got years earlier. Only the top 5-10% of students should go to uni.
I know the coffee remark has riled people on here, but it's not just coffee. The point was clumsily made, but shop bought coffee (and sandwiches) are WAY more expensive than they actually cost to make. Then there's designer gear, queueing round the block for a £1,000 phone, lease cars instead of an old banger, £20 cocktails, meals in fancy restaurants, drugs (???) - it all adds up. There's much more of an 'easy come, easy go' attitude to money these days, maybe due to the availability of credit, maybe because a £50,000 university debt makes a £5,000 credit card balance seem insignificant.
I know one couple who were WFH on full salary during the first lockdown. Nowhere was open (bars/clubs/restaurants/clothes shops) to spend their money. They said it helped them to save a deposit to buy a place (which they did) instead of renting.
House prices are driven by supply and demand. I don't agree with the narrative that buy to let or Right to Buy have affeceted things massively. If these houses were empty, then I'd be more inclined to agree. I do think that the RTB houses should have been replaced with new council homes though - that was a mistake.
Over that last 20 years, the UK population has grown by 1 million every 2-and-a-bit years. It's applying a massive pressure, and not just to the housing market - I mean the pace of growth, not the growth. We're going to end up with massive price rises for the foreseeable future (with the odd wobble, but nothing that causes a notable difference long term). Lovely family homes are going to be carved up into flats or HMOs (as seen in London) and people will buy/rent them because it's all they can afford. I think in a generation or two, housing prospects will be thoroughly miserable.
Large housebuilding projects of a size that would be needed to reverse the trend would have the locals in a lot of places up in arms though.