>The question is HOW? How would you approach things if you were in my shoes?
1. If someone is selling a course on FB or YT, that business is dead and not worth pursuing because otherwise that person would be doing it themselves. FBA, drop-shipping and real estate are the big three.
I'd accept an argument for RE, but that's not a casual thing to get into, easy to blow your cash and you need to go long-term. Flipping wholesales is one I've heard bad things about.
2. You need more 'at-bats'. I am not sure the velocity you had with your previous Saas ventures, but launching full products every 6 - 12 months isn't going to cut it. In addition, when products aren't gaining traction after 1 - 2 months, you need to cut losses and move on. I have fallen into this trap twice now, of thinking a product just needs a bit more tweaking. Both of those projects have been been put on the backburner, so nothing says you can't keep the idea but do it later when you have more resources, research, eyes, whatever.
You need to launch smaller products faster. Target niches rather than big markets. You want to be going after small markets where no VC-backed companies are. A $10k MRR market is worthless to VC, but worth a lot to a single person. Caveat: You could carve a niche out of a VC-backed company and eat their lunch on that segment, by doing things that don't scale / serving that market better by building specifically for them.
Check out Pieter Levels (levels.io) and the wider indie maker community, if you haven't already.
3. Focus on a specific market. I see some indie makers say they don't have a market, but they pretty much always do. You want compounding returns rather than launching a lot of diverse products where your social media and previous gains have to be thrown out.
You want content marketing for product A, which you may shut down in a month, to bring you people who will be interested in product C, D, E...
You don't need a specific niche, but I've realized it would be better to focus on a community or general interest, rather than launching tons of products that have nothing to do with each other.