I am looking at a 5 unit building that I want to do a condo conversion on. 4 units would be vacant 1 has a rent controlled tenant in there who does not want to move. I would owner occupy it so I don't know if I have a...

I personally leverage, but have a large rainy day fund. 

turnkey section 8 is not going to be like buying a brand new home there will always be differed items or stuff that does not work etc.. age of homes makes this impossible. then you add section 8 tenants and  there you go

It's not fun dealing with aging parents.

You could organize your own in-person event and market to your avatar. 

Being a normal person and giving someone a heads up has not bit me, yet.In addition to what the law requires, I always shoot the tenant a heads up either via text, call, or email.If they are mostly responding to email, then shoot them an email.Emojis and gifs work wonders in today's day in age.

Geez, there’s so much opinion, emotions, beliefs, and personal experience in this thread.  

Personally I don't think this lends itself well to the fund model. 

During the renovation, I faced several challenges due to the home’s age and hidden damages, including ruptured plumbing, termite infestation, rotted wood, and lack of insulation.

It sounds like you've done a great job in investing in yourself and taking personal risks.