I have a personal experience, a friend and a mentor told me about a new project that was looking very promising, he advised that I invest in it. So, I did even without doing my little investigating, not too long, the dev pulled out liquidity and that was the end of the road for the project.
So, that's how I lost my investment in that project, though I didn't put much, just about 10$, but a lost is a lost.
Please, be careful out there, the devs are not smiling
And if you must invest in a project you are not too sure of, always put something small, don't go all in, you might end up regretting.
indeed when doing research it takes a lot of time but it's better like that than investing in projects that are ultimately scams,
we do our best to minimize the risk