I just installed matrix and bridges for telegram, slack and whatsapp using the linked ansible playbook. I used my own domain and a new cheap vps.
this took me about an hour.
I connected Element on my android phone to my new matrix server and now I have all chats in one app and on desktop. That is totally great and worked far better and easier than I imagined. Well done.
Thanks for leaving this comment saying that you were successful and it only took about an hour, otherwise I wouldn't have had much confidence in the scripts. It took me ~2 hours but I'm not as well versed in ansible. I'm finally off of Slack's awful electron app.