Many Matrix rooms have daily activity. It's also better than Discord or Telegram, since it doesn't require a phone number (many countries require KYC for sim cards, but SMSPVA.com and TextVerified.com sell anonymous SMS verifications for Bitcoin), doesn't require a physical smartphone for signup (although it's possible to bypass this with Anbox emulator), supports web, mobile and desktop (including Tor Browser), you can create encrypted group chats, and you can join your preferred server or host your own (censorship-resistant and no reliance on a corporation).