I can’t even get people to USE telegram, which they have already installed, let alone get them to understand, subscribe and install a federated messaging app. it seems like it’s whatsapp or back to the trained pigeons.
Basically the bridge listens for new posts on both services and copies them as needed. Think of it like a bot on Reddit or lemmy that automatically posts stuff on behalf of someone else.
Nobody should use Telegram, in my opinion. It's run by a shady company that doesn't even disclose the inner workings of their service properly, uses a non-standard encryption protocol and doesn't even encrypt chats by default. The only thing I like about Telegram is the fact that you don't have to expose your phone number to use it.
One thing they really have going for them is timely delivery of image data.
When I detect motion in my driveway I send them the JPEG through their API, without skipping a beat I get the image on all of my devices including my watch.
I tried email, discord, SMS, slack, pushbullet. Stuff either takes a long time to come through or comes through missing an image. I honestly hope they never shut down the service because I cannot find another service that runs as well. Fortunately for my needs I don't care and the least about encryption.
I got a small team in school to all adopt my self hosted Matrix as a chat solution for a project we were working on throughout the year. It was great. Everyone jumped back to Discord after we graduated though.