You don't have to buy 1 Bitcoin to try investing, try first with a small amount that you can afford. It's better than nothing.
There is no guarantee whether in the future Bitcoin can give you the investment value you expect, but in the crypto user community they don't always talk about its valuation value.
There are also those who actually apply the exchange rate in real life.
Risk must be small enough. There is always risk to lose money but if you can find an asset with minimal risk, it is better.
Chance to get profit. Bitcoin is a strongest cryptocurrency and it leads cryptocurrency market. It has four-year cycle with Bitcoin halving and usually makes a new all time high with each new market cycle. Chance to get profit with Bitcoin is good if you can hold it.
Your priority must be safety for your capital. If you can not protect your capital, don't think how you will be able to get profit and can protect your profit.
With Bitcoin, you don't have to buy 1 BTC but can buy 0.001 BTC or 0.01 or 0.1 BTC. Even smaller amount can be purchased through Lightning Network too.