most of which I have met, the thing that many people do so that their altcoins are popular is to improve services, and really realize what is on the roadmap. besides that they also showed solidity from their team.
Exactly that improving is what makes one coin popular. It`s every day job! Blockchain is evolving project, everyday
we are seeing something new. Forks, upgrades, wallets, project needs to be in relationship with community. They need
to update community with their progress and plans regularly. There isn`t other way for new projects to attract people.