Set up a live communication channel exclusively for website members! (via Telegram or a similar method)

[laa]

Good evening... Let me ask you directly without taking up your time; 1) Without using our phone number for sure, 2) Preferably without a database, 3) Preferably by backing up dialogues to the cloud (Not mandatory), there is no need for members to communicate with each other. Only bilateral correspondence and document submission between site management and members are sufficient + Making announcements to members collectively is enough... What options are there to establish a dedicated communication channel for site members in a practical way? For example, is it possible to integrate widely used applications such as Telegram into a website? I would greatly appreciate your contribution to the best of your knowledge.... Thank you in advance...