Indeed what we can do is monitor all their social media be it Instagram, Twitter, Telegram groups and others, if they keep doing updates regarding the project i think its a good project, even so, actually it can't be used as a guarantee and needs to be researched more deeply
No my friend, a telegram group that gets posts everyday or a twitter page that shills everyday does not mean it is a good project. Rather proper development happening in the background with updates coming in the foreground is a good project. The first one is very common and you will be surprised to see how many shitcoin projects keep updating their pages with bots and not do acutal development at all. Obviously you cant expect better from amateurish teams like the ones that set up such projects.
None of this can be a "guarantee" and hence the altcoin projects are a risky bet or a complete gamble to put your money on.