~
What's your opinion ? Shall we invest or just involve in quick trades ?
Quick trades can be done by those who have enough experience in trading. Fast trading is very risky especially when you are just starting. Fast trading most of the time only happens in futures when you have a high leverage. If you're just starting, just focus on spot trading. Be patient, and learn more.
Re: is it still risky to Invest into Altcoin now?
It will depend on the altcoin you are buying.
If you will buy altcoins that are already established like those at the top in terms of market cap, the risk would be lower compare to those altcoins that has lower market cap. It will also depend on your risk appetite. Are you an aggressive investor that can risk your money buying low market cap coins, or are you a conservative one who wants only to buy those top altcoins.
Investing in general is risky, but it will decrease as soon as you have enough knowledge, and you know what you're buying, and doing. Investing is risky, but you will not gain profit if you will not risk. Investing into altcoins always have risk, but you have to take that risk if you want to make money investing into it.