It has not been possible for decades in Southern Europe countries for decades, that is why most people live with their parents and only leave home when married, and then get credits that last all the way until they retire, assuming they live that long in first place.
Or eventually get the parents house from generation to generation.
And yet there's hundreds of entire villages in Mediterranean Europe that are empty apart from a few elderly people, lots of small rural towns with tracts of empty property. Usually because they're hours away from the nearest good jobs.
What's happened is a massive shift from a small-scale agricultural economy to a mix of urban and large-scale agriculture, and the building of homes/apartments hasn't kept pace.
Now try that on a 1 000€ salary, or 2 000€ assuming married and both working at a good enough place (minimum wage in Portugal is 870€ brutto), while having a family, paying credit on the car (as public transport sucks), various kinds of insurances, supermarket, electricity, water,...
Even me with my seniority most likely won't pull more than 1 500€ netto at most places.
Yep, that's a big part of why people aren't doing it. I guess with 2000€ income you can get a loan for 100K€ (certainly the case here), but it doesn't solve the problem of there being almost no work within a ~1hr drive in any direction.
Or eventually get the parents house from generation to generation.