Now, after doing this several times my success rate is around 1 out 5.   

Start with a competitor analysis—see what STRs and MTRs in your area are charging and their occupancy rates.

If you're helping me fund a section 8 SFH, then no.

I'm eager to learn about how to find and fund properties that help my family financially and my community with affordable/reasonable dwellings for young families and newlyweds.

Interest rates are changing every day. 

But SFH are already seeing renewals at 2%-4% and release rates up at least 5% YoY...that number is even higher on some luxury ($3k+/m rent) homes as those are harder to find.The rest is entirely speculative.

@Steven Nguyen            Your first step is to liquidate some of your Crypto so you have liquid funds to contribute to the deal.

I think about this often, its really just running the numbers - if you borrow 100k at an 8% interest rate, will the investment get you more than an 8% return?

I have some YouTube videos that may help with some of your questions and always happy to have a call to dive a little deeper. 1. which development(s) tends to be the best for ROI/have the best occupancy rates? 

It sounds like you are investigating the DSCR route due to lack of investment funds.