I feel like I've really been spending way more time on Telegram these days and while it's for a good reason since it's because of a signal group that I joined I've been having a bit of problem when I keep trying to surf between the app and my exchange. It's mainly because of my phone being of low quality that it can only keep one app open but that's what I use for now.
I would not use telegram for any kind of serious trading, unless you are willing to expose all your personal information, phone number and everything that you wrote there.
Even if you use alternative phone number you should know that all information is stored on their servers forever and you can never delete it.
Not to mentioned that there is a bunch of scammers and constant bot spam, that all increases risk of using this app.