After opening the Telegram app tap over the icon shaped magnifying glass.On top of the search bar enter the username which you are looking for.Then tap on the name of the person you need.
To find and communicate with a bot, users can search within Telegram or open it via a direct link. On Telegram, bots can be identified by the suffix "bot" in their names. While normal bots are public, they can also be limited to certain users through private Telegram channels.