I tried to apply to one campaign, but my attempts were unsuccessful.
Your attempt was unsuccessful, probably due to your weak activity on the forum. From glancing at your activity, it seems you only started posting more regularly in the past few days. The managers tend to choose members who show long-term, meaningful involvement in the community discussions. With just a short burst at the end, they dont have enough history to judge whether you will be a quality addition.
I decided that it was better to know where not to apply so as not to be in a party with spammers.
This has nothing to do with your first statement. And I dont think such a generalization is fair. Spamming is individual. If you dont want to be part with the spammers, just dont spam!