If you've had it for that long and it's still not cash flowing well nor appreciating, I would highly consider putting it on the market for a retail sale. Having invested in multiple condos before, I agree with your realtor in that the appreciation on them is lower/slower. And the HOA rules, assessments (possible special assessments,) wall sharing neighbors, etc all make for a less desirable investment if the goal is to make money.
I’m totally on board with Passive Investing to generate Passive Income and quite frankly rental properties are NOT all that passive; even with a PM in place. IMO, syndications are a better route to go for the investor looking for truly passive investment opportunities. They can be a great partnership whereas you bring the capital and they bring the experience and labor to effectively execute on the business plan. The biggest thing is vetting the sponsor/syndicator/GP upfront. But once you feel comfortable and confident in the sponsor and their deal, then it’s really a set it and forget it type of investment.
As for learning syndications and vetting sponsors, I’ve always preferred not to go at it alone. I learn and invest through a real estate investment club. They’re similar to stock investment clubs but they do real estate. I’m a part of one and also lead one. They’re both for accredited and non-accredited investors. Some of the biggest benefits come with the ability to spread and reduce risk. And you don’t have to live in the area either. Post Covid, most meetings are virtual and the deals are all over the US. I’d highly recommend looking into a club for passive investment opps.