Based on this product's specifications, here are some alternatives and similar models
Protective silicone case Mocco for Xiaomi Redmi Note 9, transparent, 1 mm
Summary description:
Thin transparent silicone case by Mocco designed for Xiaomi Redmi Note 9. Made of 1 mm soft TPU/silicone material, it protects the phone from scratches and minor impacts while preserving original look and grip. Precise cutouts allow access to buttons, ports and camera. Lightweight and flexible, suitable for everyday use and easy to install or remove.