To afford paying for a house loan, setup a family and pay all your expenses such as food, education, electricity, clothing you need at least around $3000 a month. This is a rough figure of how much you need in order to
break even every month. Might vary from person to person or family to family but I think the average lies there.
That's just a rough estimate as I do not have a family to spend money on nor do I have a house loan so insight from someone who is into that would be much better.
Any graduate in Lebanon would never ever dream of such a salary just after graduating from university without proper prior experience. Even with years of experience, it might take up to 5 or 6 years to reach it. By then the amount might be more than today due to the expected decrease in purchasing power and inflation. But what really matters is the value that you are getting, which is based on your purchasing power.
Some careers might be an exception, like doctors (I guess?).
P.S. Average salary of a graduate differs from one career to another, you have to a bit more specific.