You don't need to register on pancakeswap for you buy any coin. All you need to do is to download trust wallet and create an account. Go to Dapps and you will see pancakeswap, click on it and connect your wallet then put the contact address of the cryptocurrency you want to buy.I am planning to invest in a few coins that are going up as no matter what certain coins do appear to go up no matter what. But those coins are really hard to buy and you may need to undergo a very difficult process to buy those coins. For example, you may need to register on pancakeswap to buy them!