Using signals from paid, let alone free groups is a way to lose a deposit. This is a game of roulette. Some groups do not even conduct a fundamental analysis of the project. They give signals of those coins that have fallen in price in the hope of a pump .. I think that it is better to analyze the market on your own.
Yes, most of the time it is really better to analyze a coin by ourserlves, we need to trust our own instinct and our own judgement about those coins, and as time passes by we will learn more from experiences.