...This portrays the fact that one can earn Bitcoin. But I have heard of the fall of many coins and exchanges that is why I am scared of investing in any coin apart from bitcoin. Bitcoin has been in existence for a long time and it has been consistent. It is better to invest in only bitcoin and keep your investment in a hardware wallet. Also, most of these altcoins are developed by crypto scammers that want to fraudulently swindle people of their funds. That's why it is better to stick to Bitcoin.
You should continue to stick to your strategy by investing in bitcoin, as such an investment is less risky than investing in altcoins. But this does not mean that you cannot invest in altcoins. When you get more knowledge and experience, you will certainly pay attention to altcoins, since the profit that you can get from such investments is many times higher than the profit from bitcoin.