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It is a big lesson, you finally know that investing in Bitcoin is more trusted than others.
If you missed the opportunity to invest in Bitcoin at that time, you have another chance to invest in Bitcoin this time. We are in the bearish season, it is the best time to fill our bags. However, choose the right wallet to hold the Bitcoin until the bullrun season. Don't trust CEX wallets, it is better to keep the Bitcoin in hardware wallets or private wallets.
Ponzi schemes for greedy people get unreasonable profits, they deposit assets without considering the losses and fraud from ponzi schemes, but unfortunately profit is a choice to blind the mind to think. I have a different analysis from the OP case above that he has trusted a friends suggestion to invest ponzi based using Bitcoin and but he doesn't really have any bitcoins in his wallet other than just to use the deposit to the ponzi platform address, he doesn't even have any remaining balance from his wallet until now, so Op still lost $20 at the bitcoin price at the time and didn't have to remember losing $566 due to overestimation was painful.
Yep, OP just too trusted his friend, so he wants to invest in the pyramid scheme. He was probably a beginner and didn't know much about crypto investment at that time. So, we can understand that OP can be trapped in a scam project.
Basically, he lost $20 but it is valued at about $566 now.
He regrets not saving his BTC, instead invested the BTC in a pyramid scheme.