If you really want to do something like this, pool money with friends or at least with people you actually know personally.
Even if you know them personally there is no chance that you are going to gain profits 100% which means it would not only mean that you lost your money but your relationship would also be in trouble as well at the same time making decisions are harder since people won't agree to one thing that easily therefore I think the only way to do it would be to invest in shares which are much similar to what you are saying, it's basically something that won't rip you off themselves but their shares can crash as well which they do not have any hold of. This is very similar to investing in things like a new crypto in the market as well, you can always check the Altcoins section and learn more about it, they are always looking for new investors to kick start their projects.