Not everyone is a professional investor or contractor background.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Until you scale enough units management makes most sense on the smaller scale being handled in that way, however aggressive paydowns can put you in a strong position to utilize free and clear properties for great funding options down the road on larger properties that allow you to scale your portfolio to where professional management makes sense.

I get the 'professional silence', and have been told imperiously by other landlords that I should just not respond and ignore rambling, and responses definitely encourage more.However I find I have tenants that demand attention, if I don't answer they continue to get louder and angrier, and begin trying to come up with ways to force me to answer and get involved.  

You need professional help.   

If your listing sounds "professional", these folks are much more likely to want to deal with you.

Look at property values, trends, and neighborhoods to identify opportunities.5) Create a Budget: Determine how much you can invest, considering all associated costs like down payments, closing costs, and maintenance.6) Build a Network: Connect with real estate agents, investors, lenders, and other professionals.

Readers are advised to seek professional advice.

For a complete understanding, it is recommended to review the full text of Assembly Bill 1771 and consult with legal and tax professionals.

Since you're in Europe and can't visit the property, you can hire a professional third-party home inspector or a local property manager who offers property evaluation services.