Out of all the ones you shared, this is the only one that I've experienced in my 5 years that being involved with crypto.

TBH, I consider myself lucky that I didn't fall into too much scam by these scammers because before I invested my money, I learned to identify which are scams, and which are not by watching many videos online, but mostly on Youtube. There are some videos out there that are giving tips, and signs that it's a scam. Of course I also some of the projects here that has been launched, and turned out to be a scam. Most of them happened in 2017 during the ICO hype where many projects are popping out of nowhere, and there is this one particular project back in 2017 where they put Roger Ver as one of the developers. Of course the token sale turned out to be a success, and has been listed on an not-so popular exchange, and after few months since it has been listed, the project just vanished including the money of the investors.

Rug pulls. I think you missed it.

There are many projects back in the past where they ended up as a rug pull. I still remember that time back in 2017 as well where I risked some of my money, invested into a project that is on it's token sale, and I did spent hours researching regarding this project. To cut the story short, it ended up as a scam project, and I lost my money.