Personally I haven't made any cash out from the crypto world before. But what I have seen is that people join escrow market group on telegram and this is how they get their cryptocurrencies sold:
1. State your selling amount and  rate
2. Buyer shows interest and transaction is agreed
3. Buyer sends money to Escrow account by sending screenshot of payment or transaction ID to escrow page  for payment confirmation
4. Escrow Confirms receipt of payment
5. Buyer sends his Address for transaction
6. Seller sends the agreed amount to buyers address
7. Buyer confirms receipt of coin
8. Escrow sends money to seller
9. Seller confirms receipt of payment from escrow
10. Deal Completed 😊

NB: There are other terms and conditions applied

I personally prefer Altcoinstalk to bitcointalk. The reason being that Altcoinstalk is more user friendly than bitcointalk though the reward amount for bounty programs at bitcointalk is relatively larger than Altcoinstalks. I know Altcoinstalks is in its infancy and will become more better as time goes on

Just like the US dollar, bitcoin has been the primary crypto currency that all other cryptocurrencies measure against it. That does not mean that the Altcoins depend entirely on it but it is serving as a unit of measurement since there must be a standard to use for all measurement. Sometimes fiat currencies, ethereum, tether, etc are used but as I said BTC is the primary one. It's very difficult to pinpoint with certainty how bitcoin price affects Altcoins though generally it does. Altcoins do not entirely depend on bitcoin for their survival, that means they can and are independent.

It doesn't help to be asking the question, "Is this the end of bitcoin or is bitcoin dead?", whilst you are still involved in crypto. No one can predict with certainty when there would be the next bull run. But fortune favors the bold so if you are going to invest, then now is the best time since many people are afraid to do so.

History is the best way of predicting the future. Despite all the fear, uncertainty and doubt surrounding bitcoin, people are still making a living out of it. Bitcoin has proven itself enough to earn the trust of the people. Those who will oppose it would oppose it even in the face of concrete evidence that bitcoin is legit. There is no need trying to convince anyone at this point, time will be the best way for bitcoin to prove itself again.

Some of the banks themselves are using their clients investments to invest into Bitcoin so that they give them small percentage on the money they have invested. Therefore, if you know what the bank is doing with your money and yet gives you a small percentage, why not do it yourself so that all the percentage would come to you?

As it stands, bitcoin has been on top of its game and it would even take more than a magic for any other coin to displace it. And if a coin would displace bitcoin from its position, then that coin should be independent of bitcoin. Meaning, the rise and fall of bitcoin shouldn't affect that coin in any way.