Libera is a solid network that hosts support channels for a lot of FOSS projects and has some good general chat available.

Good question, I’d love to know myself.

Most chatrooms I see (regardless with protocol or platform) are idled to death by everyone; regardless how small or big the room is - there’s just not much going on. And starting a conversation is often difficult

I guess people are burned out with and by various chats. Work-chat, Kids, Family-chat, School-parents-group-chat …