to prove they're not scammer project and minimize your investment of being scam...
1. look for the team if they're legit and real human... prove to yourself if they're human and real, not fake linkin from russia, reddit or facebook stuff...
2. list your find...
Invest in crypto with your own fund and not borrowed funds and also note that the money invested is your spare money that can be spared just incase it doesn't go the way it is planned for. Also consult various social media chahnnels of the project to find out if the project is legit enough to ommit funds to.
Invest with your own money is less likely cause and burden you with pressure when you're in a tough spot. Many advice said only invests in what you could afford to lose is because of this, I think.