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.