If you want to earn more money, it depends on your capital, the more money you have the more money you can earn . It's working like Proof of Stake. More money you owned will give more chance to earn huge money. I would like to suggest you trading is better. Gambling is too risky which you can easily lost your money very fast.
You might have a point here, it takes money to make money. But if you join in an campaign its your effort that is being paid by bitcoin or altcoin. Then with this you can save and have a startup capital and use this earning in trading. This is a good idea in my opinion and that is also my plan.
Also you can earn from social media campaign.
Trading can be profitable if you have knowledge and skills in trading. If you have knowledge and skills about cryptos then surely it will double or triple your capital. Anyway, you have to work hard for it to earn more profit.
I think there is nothing important and need to learn about trading, because it all depends on luck, trading is almost the same as gambling if we get the luck then we profit and vice versa.
This is completely wrong, if you know nothing about trading then you are effectively gambling with your money, and I will say that this will be worse than gambling since you are not going to get any fun and your chances of making money are zero, however if you take the time to study the markets there is a good chance that you will eventually be able to make winning trades in a consistent basis.
It doesn't just take luck for you to be able to trade. You might as well be wasting a lot of money if you make careless trading decisions. There are risks to trading and in a way, it would be like guessing and it is also somewhat similar to gambling but I disagree that you would only need luck in trading. Most successful traders have accumulated knowledge and experience - with this they are able to make wise decisions.
Also, it doesn't just take money to make money. One could have a large capital and plenty of money but without the right skills and knowledge, they could just easily lose that money if they don't make the right financial decisions.