1) My question now is this, does it mean people no longer profit in Bitcoin investment but yet there are informations about the increasing number of Bitcoin investors?
People are getting profit from Bitcoin investment, obviously. Just that, many of them are not ready to tell the public the amount of money they make out of it, and that is what we call privacy. Some of them don't want people to know that they are into crypto, and that is why you only see people who lose online giving false information about bitcoin. The surprising part is that even if they lose to another coin, they will still talk about bitcoin because they know that if they want to talk about the main coin that makes them lose money, people attack them by saying they made a wrong decision.
2) Why are people not bold enough to use fake social media accounts to talk about their success stories after making profits in Bitcoin investments since they want to maintain privacy?
To me, it will not make any sense using their fake social media account. Why don't you just use the real account to say that your bitcoin investment made you successful? The reason I said this is that since bitcoin is not something illegal, saying it in public is not a big deal.
3) Why does it take my family members who abused me when I encountered a loss in my investment to listen to my success story even when they have seen enough evidence?
This can be because your family members do not know much about bitcoin investment; they may view it as a scam since they don't know anything about it, and sometimes people think there is no legal way of making money online.