Here's a nice big collection of programs that either don't require equipment or use minimal equipment you could improvise - https://darebee.com/programs.html
No account or login, no ads or affiliate sales, and all programs are PDFs you can download.
You can do most workouts with those reusable tote bags at home! You can also do push-ups, sit-ups, pull-ups with no weights. Planks. You can get pretty ripped without workout equipment.
Why do you need to lift weights, exactly? You can get extremely fit with a small set of basic bodyweight exercises and some creativity. All you need is a mat, or even a soft carpet.
I just bought a kettlebell last week on Amazon and it came today. It was the last one of its model, but I'm sure you can find some others.
I've never lifted weights before but the kettlebell sounds appealing because it's supposed to be "functional strength", not overworking a single muscle like big gym machines can.
Yes, it is pretty much impossible. Buying weights off craigslist or Facebook has always been the better bet anyway, because it's not as if a chunk of iron can get worn out and they are much cheaper. Listings are probably harder to find and more expensive, though.
You can also make plates out of concrete, although that also requires more room than dumbbells and for you to already have a barbell.
Rogue can notify you when their kettlebells come in stock. I managed to nab one the other week. You have to act fast though, because they sell out pretty quick.