However, more recently, I'm concerned that they've lost some of that charm and are going to suffer due to the structure of the platform/website.

As the developer you must keep your contractor honest and under control or suffer the consequences.

However, when buying houses with leverage and paying the mortgage/expenses fully with the rental income, one would suffer a loss in the principal (down payment) only if the prices drop by, say 75-80% (depending on the mortgage), which is a crazy unrealistic thing to happen.

You also seem to be suffering from analysis paralysis. 

I have heard that peel & stick suffers a bit from indentation, so when a tenant moves out, a new floor is in order.I'm thinking that if LVP costs $6/sqft to install, about $3/sqft is labor. 

I suffered an injury that I knew will take time for me to heal so to fill time I decided to begin my real estate journey.

And now someone will suffer as a result?

I know more and more are suffering bad credit due to healthcare issues and although I want all my renters to be excellent at paying bills, I do understand that certain things can happen that you have absolutely no control over.

However, if you plant resell it, I would walk away.

He suffered like the guys who get coral cuts on their knees, in Hawaii, with a the huge, exploding boils, which we call Furuncos in Brazil.