1.How did I lose my bitcoin?
I learned about the ETHBull and ETHBear Token which is the 3x leverage token of the FTX exchange. The price of ether was then below $ 100
At that time the price of ETHBear was $ 30 when I invested.Then the price of the Ethereum was around $ 120. At the same time, I panic and I made all my investments on ETHBear in the face of huge profit.
obvious that Greed covers you right?you are being Blind of the promise profit not thinking that you are more safer in Bitcoin that these shitcoins.
I know it is hard but you have no reason to stay that feeling because this is only a Learn to experience thing.
2.Big mistake of my life

this investment was done at the behest of a youtuber which proved to be a big mistake in my life.Now I have thought that do not invest at the behest of others.
When I lost my entire BTC, I felt very bad, please do not do it.
Thanks for all
The question here is "Have you learn your lesson"?
then invest again but this time with trust and patience and never to be greedy looking for huge profit,Be contented in 10-20% income each trade.
10-20% is already big for each trade but this is way much more better and realistic compared if you do set out lines which is really hard to be achieved with this current market condition
when in talks in price movements.
When it comes to the situation being experienced by op where he do believe up into things that are not likely to happen. Yes, leverage can give you that but when listening up others calls
and suggestions then it isnt really that advisable.
Learning up a lesson doesnt necessarily for you to lose money but this had been always the case.