If you don't have a lot of money to spare, it's probably not a good idea to only invest in Bitcoin. Buying Bitcoin can be risky, and if you put all your money into it, you could lose a lot . It's better to spread out your investments and consider other options .Remember to invest only what you can afford to lose.
^I don't see a risk at all if you have a plan for holding it in the long term, not the short term.
BTC can be highly volatile, and its value can fluctuate significantly over short periods. If you have limited resources and cannot afford to lose the money you invest, you probably want to reconsider the DCA way of buying BTC, it is a strategy where you invest a fixed amount of money at regular intervals, regardless of the asset's price. It can be a useful idea when investing in BTC or any other volatile asset, especially if you have limited resources. I will consider BTC a good investment than the altcoins.