This forum can be a recommendation for you to find new tokens, namely in the bounties (altcoin) section. You can search for new tokens there and you can do your own assessment of a token.
You cant find anything analytical on this forum. It will be a few links to the site and whitepaper, social media links and a thread that will get shitposted in. Beyond that the analysis is completely on you. You have to face the reality that getting guidance from this forum about altcoin projects is equal to zero. Apart from the projects that get reported as scam in the "Scam Accusations" section, I dont see any value in this. Inorganic marketing is very common through forums as well, you may get misguided by fake accounts.
CoinmarketCap is also a good place to find new tokens,
CMC is an aggregator, not an analytics site.
but I don't trust YouTube, because they may deliberately promote the token and get rewarded.
Finally you said a correct statement.
The technique you have to do before buying a token is to approach it from all aspects, be it how active their social media is to how big the community is, the market approach is a mandatory thing that you shouldn't miss.
Even more important to check the working product, if they have any and if the team has been involved into any previous projects and how they turned out. Still, in terms of legal outlook and of these projects can fail with the investors losing their money and having no legal approach it recovering their money.