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

HE HAS CAUSED PROFESSIONAL AND FINANCIAL DAMAGE TO ME!! 

What were the actual performance numbers, and what might have been the cost of management if it was professionally managed.

You might be able to find a lot of this info online, on YouTube, here, etc and piece it together however as a busy professional I didn't have the time personally to try and fail - nothing wrong about choosing that path however I knew I didn't have time and I was in peace with hiring a coach to help me through my first deal, 8k is affordable in comparison with the 30,40,50k programs out there.

As a listing agent, I explain to seller that an inspection can be more protection for them, anyway, because 1) buyer waives right to repair anything discovered in the inspection if not negotiated during inspection period, so fewer surprises at final Walk Through, and 2) buyer less likely to succeed in blaming seller later for something even their own professional didn’t find (unless seller was really hiding it).

.- Carpets must be professionally cleaned or, if necessary, replaced if there is excessive wear.- The yard must be in good order with no debris, either natural or other.

Maybe get a professional painter in for a quote and explain what happened and see what they think went wrong. 2.

It's essential to build a team of professionals, property managers, real estate agents, and contractors who specialize in investment properties.

You'll see a ton of people make money on the connection to the realtor, investor, and/or professional versus being them him/herself.

So as a 'reward' for tenants being good, I paid to have professionals go steam clean the carpet twice a year.