Avail does have some limitations.

If for any reason, the Prospective Tenant(s) fail to complete all move-in requirements by the above listed date, the Landlord will return the property to public offering and the entire binder sum will be forfeited to the Landlord for expenses including, but not limited to, lost rent, holding costs, advertising costs, and marketing costs.

The insurance company has a limit to what they will spend based on the contract they have with the insured.

Also purchase price is probably $5mil and up for a single family house, so that could be a limitation for many investors.Since you are in the DFW area, I'd say there is probably no better place to invest than right here in your home town. 

There are multiple factors that go into determining rents and if there is limited data the rents will be off. 

Seeing as our house is pretty rural, our choices are limited.

Totally new world for me knowing there are properties off the market, wholesalers, and people that loan money just for this purpose, different from a bank, I have always thought we were doomed from finding a good deal as everything I found was already on the market...my little knowledge and limited believes got me trapped.

Most will likely stick to the technical limit of Sept 2021 when it ceased being a primary residence, but some may be comfortable going by the address on the 2021 return and others may explore a partial exclusion, depending on the reasons for your move abroad.If you'd like to read up on the technical rules, the IRS publication 523 gets into more detail than most people would like to know, but it does have some helpful tables and examples for different scenarios.

Most people that have limited experience go the thought leadership route.Start learning everything you can about real estate investing and then regurgitate it by writing blogs, starting or being featured on podcasts, blab about it on YouTube and social media.  

If you stop growing it wide early (more real estate) and you start growing it deep instead (more equity) you are limited in your final outcome.