There are a lot of properties for sale right now in Memphis and my hypothesis is that sellers realized they are going to miss the top of the market if they wait any longer. Suddenly many owners wanted to sell - but since interest rates have gone up and the economy is a bit unsure buyers and sellers have a different opinion on what the houses should be worth right now. So houses are sitting on the market a little longer.
As a born and raised Memphian, I would agree with the other comments that Memphis can be a great place to invest if you have good boots on the ground. Memphis can be tricky for out of state investors because of street by street differences and difficulties finding good tenants, especially at lower price points.
As far as socioeconomic factors, Memphis has a lot of transportation industry businesses which provide solid blue collar work, and much of this stayed open as essential even during the pandemic. There is also a huge electric vehicle manufacturing plant under development just NE of town. So we have a pretty solid economy, but the average income is probably a lot lower than other cities with a different industry focus.