Today's investments in real estate are very popular, as such investments are much safer than investing in, for example, cryptocurrency. But the real estate market is subject to the laws of economics, so it faces crises because of people's actions. To know the signals of the collapse of the real estate market, I recommend reading the information here https://timthomas.co/signs-of-a-housing-market-crash/
for a good reason. Maybe this information will save you from an unprofitable investment.