There are many fake clients of Telegram on the internet, often made by scam groups to defraud money. To download and install Telegram on your computer, you must download it from the official Telegram website to ensure credibility. You can follow these steps:

1. Open the browser on your computer and visit the official Telegram website: https://telegram.org. Please remember this official website and do not get it wrong.
2. On the homepage, you can choose the version suitable for your operating system to download.
3. Click “Get Telegram for Windows” or the corresponding button to download the installation program (.exe file).
4. After the download is complete, double-click the installation program and follow the prompts of the installation wizard to complete the installation.
5. After the installation is complete, open the Telegram desktop app. You can choose:
   1. Log in by scanning the QR code on the screen with your phone (recommended)
   2. Or enter your phone number to receive a verification code for login

Once logged in successfully, the Telegram desktop version will sync with your Telegram account, and you can start using it.