If you want to invest in cryptocurrency safely and definitely give you a profit, then I advise you to invest in Bitcoin, because Bitcoin will remain the king of cryptocurrency for forever and the price of Bitcoin will definitely increase very high, so by investing in Bitcoin, then you will definitely get a lot of profit and I am sure that if the next bullrun happens, then the price of Bitcoin will definitely reach at least $100k.
Well said sir, you have just spoken my mind. Why think of cryptocurrency to invest in when we have the first and the original coin, Bitcoin would continue to wear it's crown without having any second best or socessor. Left for me alone, the price movement of Bitcoin shows upward tend and that is enough for me to risk all my money for investment into it, despite the risk associated in bitcoin investment due to valatility, that other crypto and altcoins are even more worse than bitcoin, the valatility of altcoins is what makes them good for short term holding or trading. But if you stick to Bitcoin for long term holding, I assure you that, you'll not regret your actions.