I am just curious why you need to request others to buy Bitcoin. Because you can buy Bitcoin yourself for any amount. It's not necessary to buy a full bitcoin. So you don't need to think about the 50/50 scheme when you intend to invest in Bitcoin. I assume you don't have enough proper knowledge about how Bitcoin works. So you need to study a bit more. I will advise you to spend more time on the forum and read as much as you can, especially related to Bitcoin technology. It's true that if you can't take a risk in crypto, you won't be a gainer at any point. Crypto isn't for panicky people.
The biggest mistake new investors make today is that they don't spend much time learning about bitcoin before investing, they just want to speculate and get rich quickly from it without any knowledge. From there, they lack confidence in bitcoin and some will miss the opportunity to buy at a good price while some will not participate because of their ignorance.
That's why I always advise newbies to focus on learning everything about bitcoin before making an investment decision. Don't rush to invest without knowledge about it because they will also panic and dump prices if Fud happens.