I have think about this and i can't find an answer, how will you know that a team cares about investors without trying them out first? promises comes first from every project's team and you will have to give it a try to know the end game
The answer to this is very simple. You read comments and opinions of those who did deal with them and know something. If there's nobody like that you have to investigate yourself.
For starters you can check if their photos and credentials are real. If they're lying about their previous projects and experience or don't want to give their real names it means they're not trustworthy.
Yes but do not forget that there are projects in which the concept is aimed at anonymity.Therefore, providing their services, the team really wants to remain unnoticed.(in any case, I do not justify them, I just want to emphasize that there are such projects and they have every right to be anonymous)