Telegram
Also on WindowsTelegram's desktop app for chats, groups and channels.
Installs from the Snap Store.
Good news: Telegram runs on Linux. It's the same app you use on Windows, and TuxPick installs it for you from the Snap Store.
Install Telegram with TuxPickIt works on Ubuntu 22.04 and 24.04, and on systems built on them like Zorin OS and Pop!_OS.