Even after taking online courses and following the guidelines they set out, you feel like you're doing something wrong because you're not producing results.

If that's the case, and it were me, I would focus my SM time budget on Instagram, and maybe Twitter, focusing on producing top-quality images to post. 

Single family homes and townhouses are often going to fluctuate in price more than apartment buildings, because they follow the retail market, where apartments are based on how much income they produce. 

I've realized that it'll be difficult to scale on a part time basis while keeping a healthy family life, and I like my current profession too much to leave.  

I eventually moved out of the top floor and now have both units rented out that produces me a positive cash flow after all expenses.

The bottom line is he couldn't produce the results you wanted when you wanted them. 

I guess though it all depends on how much more you can handle to spend and what that new higher amount produces for results.  

Seems they too are too lazy to learn, want something quick and easy to produce creating their income stream.

Hook up with a top producer who will show you the ropes.. or work for a commercial brokerage.. if you truly want to do this full time..

Have your marketing efforts produced results?