Given what you’re looking for (affordability, cash flow, and the ability to add value), Detroit might be worth looking into.

I've become a firm believer that it's not just an ability to pay but how you pay.

If they are struggling then money they spend in one area affects their ability to pay other bills like rent.

So, I DON'T trust my ability to determine someone's character based on a few minute casual conversation and I DO trust my ability to manage even difficult tenants. 

They are essentially the same thing you are describing, but sharing an "expert opinion".I am also not a fan of how BiggerPockets itself is doing this same thing in the forum by posting blog posts and you don't have the ability to comment on the posting (because some times I disagree with the posting!) 

I currently don’t have the financial ability to invest additional funds into it.

I can buy a 2-4 unit with 20% down vs conventional can only buy a 2-4 INVESTMENT property with 25% down 4. there are options where DSCR loans dont repot to personal credit, helps in not having to show a bunch of paperwork or not one person in a partnership has to carry the debt5. way less paperwork to close on this loan type vs a conventional loan. we care about the income of the property you're buying and it's ability to service the debt of the property whether we use long term rents income, lease income, or air dna/bnb income.6. easily buy in partnerships, add people to your operating agreement, its as easy as that so bring partners into a deal. helps with scaling and raising capital or getting partners involved7. gift funds allowed to close on these as well, and like I said earlier, there's only a 10day seasoning period of funds with some lenders so that means you can literally have a private money lender deposit money into your account 11 days before closing, and you can use those funds to close!

I would just continue to grind over the years until you have the ability to pay for the DP yourself. 

As others have mentioned the ability to gain experience without risk is very valuable even if you are not making the profit you would like.

I also have multiple streams of income and the ability to reduce my expenses sharply if needed to payoff a major unexpected expense.