The very first wrong decision he took was to sell his house to invest the money in Bitcoin which is never recommended option no matter how much potential Bitcoin has. One has to only invest what they have as spare money into things like cryptocurrencies because there is basically no guarantee as to when you might get something on top of it or even get your actual money back since the market is extremely volatile and unpredictable as well which makes it difficult for everyone.

And then he invested or traded the money in the market without gaining any knowledge beforehand which is basically the recipe for disaster for a newbie. You cannot gain profits from the cryptocurrency market if you don't even know how the market works and how you can do all the things.