Again, large commitment of time, patience, and ability needed.The amateur of “semi pro” investor should realize that the professional investors (such as myself) spend ALL DAY EVERY DAY doing the above.  

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

I recorded a virtual tour on my cell phone because I was getting tour requests I couldn't fulfill, but no one has asked to see the property since I made the recording.

. --- Who gets all the phone calls and wastes time calming a tenant down because the owner's contractor doesn't show up as scheduled after they took time off from work or a 3 day job takes 3 weeks?

You will find that lenders will reach out to you and try to ally alongside you (I know I have received a few emails and phone calls from different lenders trying to offer their services) but few are willing to 'teach' you.

But be prepared because you are probably dealing with a professional tenant.

That would probably require a professional. 

I'm not as good a professional but the work I did was mostly good enough for us to live in, and the small fixes to make it good enough for renters has been worth trying to do it myself.

The feedback seems a bit general or maybe you just condensed it for the post...If not, I'd personally have a chat with your agent about what they are asking in those follow-up questions and hope they are assertively making those follow-up phone calls with your showings.

Pay attention to how professional and transparent they are.Avoid Pressure Tactics: Scammers often pressure you to act quickly.