I have one service I have used for a 1.5 years to some success. I like this Rocket.chat since is it open source and can self host it on a Linux server. That means there should be 3rd party track like on Telegram. It also has Python integration with a package which works with my scripts.
If you start a Off-the-Record session in Rocket.Chat with another user, all messages will be end-to-end encrypted and will be deleted after the session. This is perfect if you want to exchange some sensitive information with someone else.
https://www.tecmint.com/rocket-chat-open-source-team-chat-for-linux/amp/FACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!