I agree with you because investing on what you don't have the perfect knowledge or basic knowledge is not really ideal because it can lead to negativity in life or negativity in area of concentration, now some people buy coins at cheaper rate which is approximately when the coin is low and immediately the coin rise they have to sell to make profit, so I would have prefer to purchase and hold for long time so that the profit will come in surplus form, and i noticed that people always perform these,  that after purchasing a coin with higher rate and the coins happen to decrease in price, some people rush and sell, which is bad, if you buy a coin and the coin go down in price, if their is a spells money purchase more and hold because definitely it will rise again.

I'd found another way, just join the pump and dump group...they will help you to spend everything you have.
I hope people would clearly understand the risk of trading and they should have to spend time studying this. We need to gain knowledge because that is the only tool that could help us to make a good decision.
If we don't want to lose everything we have, then we should extend our effort make research, listen to other's advice, and never be in FOMO.

This has been preach many times in this community and yet many still fall for this specially newbie investors.

Timing and patience is the key, wait for the price to at least go on a correction. But since we are in a bull run, people are still going to buy though. But in a bear market, it could be different strategy, but cheap and then wait and hold.

I fomo'd back in the days, but that was like 2 years ago already.
Just put your mindset into investing when you have the extra money to do so.
Don't just go invest whenever opportunity comes even if you are almost financially down.

Do we here just to lose our money for the scammers and by mistakes if making bad decisions? Maybe we are wrong about that because it is not a reason why we are here and why we spend time knowing crypto and Bitcoin. I don't feel the sense of doing this, not really.

Because if we are here just to experience losses, we better not waste our time knowing crypto in the first place. Much better to hand over your money directly to the scammers. We are here for good reason and that because we wanted to grow our money and that is why we need to to avoid anything that could ruin our plan.

This is why most persons have faith in the saying which goes 'Cryptos are for hodlers'. There is even a topic about this and it goes a long way in explaining how your in the advantage of in the clear if your willing or ready to hodl  your coin.
This is when considering only one aspect of crypto investiment and that is trading. In trading, you can vary loose crypto if you have the luxury of time to wait on your investment. Its the main determinant for a failed investment and that is, if you don't  buy at the pump and sel at the dump. Cryptos can be easily lost when you aren't careful enough to observe certain rules and that is;

* Sending cryptos to the right address
* Not confirming the address your sending crypto to
* Sending crypto to the wrong wallet
* Hacked exchanges
* Investing in scam platforms and
A lot of other means.

If you don't have patience and enough knowledge about trading, it will surely bring you in many loses. Another thing you will lose in trading if you trade a coin which doesn't have a good future that's why it's important to choose the right coin to trade. In trading good timing to buy and sell is also necessary, so learn the graph and price movement carefully. Don't rely on Fomo or through the words of others. Use your own strategy!

And when you are on margin/leverage or buying timed shorts and longs. They do increase the chances for huge profit but are likely to lose you your money tha while investing with you own money. When you buy a coin with your own money, you would be more comfortable while you are taking loses as you know, the prices could rise some day and you just needs to hold on till that. That won't be possible if you are trading with borrowed funds.

I would add, don't use borrowed money from the bank, it really won't turn you into a trader, there you just look like you're being chased by flower collectors every month. then trade by buying and leaving for a long period of time. buy and forget, save for the future.