Users of all kinds, be careful where you put your feet: the ground is oily & no system is credible…
I never liked using ‘Telegram’.. On the other hand, I market 'numbers' that are usable... 
Discussion
Unfortunately, it's our only option for our sport club. It's the only platform everyone agrees to use for group chat. It's primarily used for club notifications and one neat bot that pushes warnings to everyone if there's a malfunction in the sporting equipment.
If someone wants privacy, Signal is amazing, but Telegram is super convenient for everyday stuff and weather chat. ☺️