-I knew the area and economic drivers.

-Identify the highest-and-best-use given the current improvements, economic environment, tenant demand, and cash on hand.

Glass-Steagall separating commercial from investment banking came out of the same experience - after its repeal in the 1990's we pretty quickly got into the financial crisis of 2007-2009. 

Anybody that would turn down an instantaneous 100% return on their money needs to look at some economics courses.

I borrowed 25,000 for down payment and purchased a 2 bedroom Co-op apartment near the peak of the cycle before the Global Financial Crisis.

As luck would have it, the financial housing crisis was just about to break wide open when I sold it.

If the current tenant only paid up when they realized they were being evicted, it MAY be that they are using the COVID crisis as an opportunity to take advantage of the no pay but no eviction situation. 

The rental market is pretty strong and if they can vacate to a more economical or with someone that can better assist them, that would be your next best scenario. 

I'm currently in year 13, doing my A levels this year (subjects: economics, math, computer science), and I do not know what do to next in order to move closer to my goal.

Additionally, I have a number of tenants that may be at risk for job loss especially if economic conditions deteriorate.I think we'll see more property abandonment at the very lowest end-- recently I saw an article about a motel (housing of last resort) where the owner abandoned the property and the city (orlando) water was being cut off.