* it's advisable to diversify your investment. The cryptocurrency market is very volatile when for example coin A is having a pump coin B can be having a dump let's say you invest all you had on only coin B you will be headed for loss and regret. Spreading your investment amongst project is quite advisable not only in the cryptocurrency world but in so many other sectors. The future can be uncertain and unpredictable but when you have investment on more than one project you tend to increase your safety
a very common mistake among people who invest in cryptocurrencies and are generally new to investment is that they think "diversify" means "buy multiple things instead of one". but this is wrong and a very simple way of thinking about it.
just buying more than one coin is not called diversification. if it was that easy then everyone would have become millionaires. diversification means you buy multiple assets that are not connected to each other! for example if you have coin A and buy coin B to diversify but if coin A goes down then coin B follows it down then that doesn't mean you diversified. it only means you made things harder for yourself to handle.