The worst ever bitcoin decision I have ever made so far I think is not joining bitcoin when I first learned it when it only got 500$ in price. I thought at first it was a scam, so I have not joined it. I have began to notice it's potential just last christmas.
No offense, but if you're going by price action alone (and its potential as a "get rich quick" scheme), you're not seeing much of Bitcoin's real potential.

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Last year, I once joined a campaign and I think it lasted for a month. Last December,the tokens were distributed and I got 390 tokens.It once reached 3 dollars per token and I will earn for like almost 1200 us dollars but I told to myself this is kinda low and I want a higher profit so I waited for weeks expecting it to come up but it was disappointing that currently it now sits on like 0.15 us dollars and I will just earn like 58 us dollars. I immediately regret my decision and I should have sold it at the very beginning.
Yeah, I know how that feels; I did exactly the same with the Spectre.ai tokens I got earlier this year - should have just sold the things immediately (although I would have bought BTC next, so I would lose most of the money anyway).

Yes these sites make us fool and we loss within seconds you do not know when you loss your coins so it is a very foolish decision to involve in such profit sites.
These are sites just by name and totally fraudster sites. I have never been with such foolish acts and do not want to involve in such inverse profitable sites to get shortcut money. Just do your Bitcoin investment and make profit is an authentic way and easiest one.