Generally speaking, Telegram Bots are third-party applications that function inside of Telegram. On Telegram, a wide variety of bots are available.

Almost everything a human chat partner can accomplish in Telegram can also be done by a bot. Telegram offers a free API that may be used to build bots. Additionally, Telegram bots are extremely safe, thus every message exchange between a user and a Telegram bot is end-to-end encrypted.

there is so many useful telegram bots. Some of them more useful for
1. Download youtube videos and audios
2. Download instagram photos & videos from telegram
3. Add watermarks to images
4. Learn languages
5. Translators..etc.

Some of the best telegram bots function like the above. The more we use telegram bots, the more we can do easy things online.