2 days ago I invested about $215 to buy MATIC, Polkadot and Cardano, and happy because the market is green again and I profit more than 10% or the current value is about $247, to buy when it dips of course takes courage and optimism because many people panic and sell.

This is obviously a hoax. Do you think microstrategy and other institutional investors will still trust and invest in crypto if there's such a thing like this. And also a link to source for reference on what you are talking about so that this discussion will have a sense since it just look like that you are just a making a topic here to threat people here to avoid investing on crypto anymore.

Why would there will be a new technology that will kill crypto at the first place? Who will waste there resources just to bring down crypto while government are now starting to acknowledge the use of crypto, blockchain in particular.

we have very often seen the reality that is happening at this time where a lot of miners have lost everything because they are in the crypto world even though the last few years bitcoin investment is very promising where a lot of people become millionaires because they invest in bitcoin in the long term so that it is different from today, we have absolutely no idea why it could cause them to lose everything, is the crypto world less promising, we hope that this is only temporary and the digital currency will soar again as it has in the last few years

Wise or not depends on how the person manages the borrowing money.
Sure, no guarantee of success in crypto. Even I never know if there is an investment that has a guarantee of success.
If the person is a professional trader or an experienced investor, I think it is no problem to borrow money. At least, he knows well how to trade or invest properly in crypto. And he must know the safest way to use that money. And if he can get the profits, just prioritize to pay off debt/loan first. Then, the remaining money from the profits, can be used again to rebuy another coin.

Trading and gambling probably the risk are equaly same but the difference is gambling pure of luck but trading results are depend on our skill to predict the market and according to the article that his mistakes was always be all in during trading which this can lead him to huge loss and from it he lost everything to crypto but fortunately currently he was on rehabilitation to healing his addicted but he worried this will happend to other people

After being defeated and eliminated by Betis in the Copa del Rey, Sevilla are going to have a match away against Valencia today. This is an important match for Sevilla seemingly. Because this is their only match missing. And they have a golden opportunity right in front of them to drop the point interval with Real Madrid to two points. But they need to win this match first to do so. Valencia would make them difficulties I believe. But this is not an impossible match to win for Sevilla and I believe they will make it.

It is not wise to borrow money in any business. All businesses may face losses. Even if the business loses, you will have to repay your loan. It can even be a financial burden for you if you can't afford it. And you don't just have to make up for the loss, you must make a very good profit in the business because you have to pay interest on the borrowed money as well as your own profit. Imagine for a second what will you do if your investment goes into a lose.

I will personally answer, it is very difficult to avoid scam investments, especially in new projects that actually have potential. Because currently scammers also have a very clever strategy to trap investors. However, apart from that it doesn't scare me into investing even in a relatively new project because one of the keys to investing is to do it with money that is intended for investment. So, if the money is lost it will not have an impact on our finances.

All are good, do what is best for you, the one you think it will be easy for you. Just that investing is a longterm business which if you are not patient you won't be able to cope with. All are good which brings profits when you do them well.

Investing in altcoin at the moment is not bad, in fact if the price of BTC continues to fall, it is much more attractive to continue buying Altcoins, because that is the logic that governs the market, of course everything is based on the fact that if you buy it right now it will not It should be sold unless it is in eventual profit.
For me the best investment will always be BTC, but altcoins represent great power if they are bought very cheap and sold very expensive, and those are the opportunities that few see.

As much as this sounds good for the crypto community, am hoping that the mayor is not acting ultravires which could land the mayor in problems and in the process give bitcoin a bad name. But if his acting within his powers then this is good news and hope this investment pays well with time.