It's very scary, but not that graphic; occasionally a character will get shot or harmed by another, but most of the violence in The Terror comes from nature: dying from a great fall, for example, or being frozen alive.
Generally, Telegram bots are safe to use. However, it is essential to be cautious while interacting with bots, especially if they request personal information or access to your account. Stick to reputable bots with positive reviews, and avoid sharing sensitive information with unknown or untrusted bots.
Not all Telegram chats are equally secure\n\n Regular chats are not end-to-end encrypted. Only secret ones are. No other messenger does this: even the notorious WhatsApp, part of Mark Zuckerberg's data-hungry empire, uses end-to-end encryption by default.