"Not your keys Not your money" is a popular saying in the btc and the entire crypto community about safe keeping our asset. There is no secured way of keeping your asset than your personal wallet and most preferably a hardware wallet.
Exchange is not the right place to keep your btc, it is only good for temporary if you are a trader and must access your funds regularly to trade.
We have seen many cases where exchanges got hacked or go bankrupt as a result of misappropriation of funds and funds are stolen, many users becomes victims because they have all their funds stored in the exchange.
Even though those victims will be compensated for their lose, there is always a negative effect on the victim, it is better to be safe than sorry.

I don't quite get the explanation of the op regarding IDO, I thought the full meaning of IDO is Initial Dex Offering (IDO) Which is usually carried out in most of the dex we have in the market,  most project with dex like polkastar are hosting ido on their network to support and encourage the community IDO are gaining popularity because they are less stressful and cost effective than ieo, many projects now opt for IDO which is not a bad idea at all.

Why do I have a feeling you sound like part of the team of this project and trying to shill it to members of the forum! I think an ordinary supporter won't know this much except the owners, anyways I do not have anything against shilling a project especially when the project has got good and amazing ideas and offers to the crypto community, o don't know anything about VirgoMoon but from the name it already sound like the Mooncash meme type of project greater for quick gains, let's hope this is different 

New projects are almost comes on the BSC wallet or on the TRON wallet becasue of low fee so in future the BSC wallet is good and secure like the ETH or not?

I hope someone already pointed it out to you that bsc is a network not a wallet, better to know the difference since you are a high rank member it will be good,  and as for your question,  yes I believe more projects are using the bsc network mostly because of the cheap transaction fees everyone is enjoying unlike the ethereum network,  if eth are unable to fix the high transaction issue am afraid bsc will become even popular and even surpass ethereum.

I bought BNB coins for $391 two days ago.  But now the current price is $361.  Honestly I am very disappointed.  All of the investments we have made this month are more likely to be losses.  If this continues I will have to refrain from investing.  What do you think about BNB?

And you don't seem like a newbie to me so am surprised you are asking this question when everyone knows nobody can accurately predict the market,  if your investment is down as a result of the market correction then best thing to do is exercise patience and wait for the market to recover,  some people bought bnb at ath and if they sell because of the crash will make them lose their money which is not a good decision.

Why will btc crash! I think people just don't know the right word to use when it comes to describing btc price dump,  when you say something will crash means it doesn't have a chance to recover but that's not the case with btc, whenever price goes down it most definitely goes up again so I don't understand why some people keep asking this question when most of them already knows the answer.

It feels like bulls and bears are at war over who will take over fully,  despite being bearish the market still struggle to be bullish and some analysts says there will be another leg of bull run before year end and I seriously hoping this happens to be the truth, there are recent good news relating to btc that should keep the price up, soon I believe we will see it happening.

Bitcoin and Ethereum have grown the most we've ever seen.  Many have speculated that with the rise of Bitcoin and Ethereum, the price of all other coins began to rise.  But only Bitcoin is rising the most, the price of all other coins is not rising that way.
 If anyone has the right idea, you must discuss this. In fact, what will be the future of all other coins in the coming days?

To be honest the logic is very confusing and don't have a concrete answer, when btc is pumping you would expect other alts to pump alongside since most of all alts are pegged to btc but recently with the btc pump that almost didn't happen with most of all the alts, only few alts pomp very high while the rest were just some percentage high,
some people say when btc is pumping investors often sell their alts to join the btc ride but even when btc is dumping alts instead of rise will dump together with btc, some say btc dominance but even btc dominance was down alts didn't pump, so i find it a bit confusing.