Of course, you can buy and sell crypto (bunch of shitcoins) but not bitcoin. Bitcoin is different and unique for long term investment. I believe that you have almost 100% of your portfolio on shitcoin as a trader that you are. But I bet you, you are doing more harm to yourself and in future you will regret playing around with shitcoin (gambling). Instead of you to use your precious time, energy and resources to pile up wealth for yourself by investing into bitcoin to build and grow your portfolio overtime. Traders end up with little bitcoin in future and regret for trading it all for little daily profit, while investors are the opposite.
People who buy altcoins and sell them in the short term are just wasting their time and resources. They don't understand how what they are doing is just going to inconvenience themselves and potentially cause them to lose money seeing the altcoin market which is so much more volatile and just following the movement of Bitcoin.
They should divert their time and resources to invest in Bitcoin. They can invest in it without being bothered by its volatile price - just need to put it in the long term and adjust it to financial ability, then invest regularly, it's that easy, no need to monitor the market 24 hours a day like what traders do. They can accumulate their wealth and enjoy their growing portfolio.