Succesfully investing in real estate is simple; not easy, but the fundamentals are simple.
I don't consider my personal residence an 'investment' other than a nice place where I want to live. I paid full pop for it and I'm sure it has declined in value. I don't care because of many other intangible returns I receive.
Folks who buy a personal residence or invest in real estate for appreciation are speculating, to me.
When one buys real estate for a significant discount one has a built-in cushion. When one buys using the 2% rule or something similar, one ensures a cash flow. Simple to understand, not too simple to accomplish.
As for demographics, well, that's why I invest locally, because I try to be an 'expert' in my local community's demographics.