Even with the correct driver, issues arise. Here are solutions for the Huawei Y9 2019.
Here are some common issues related to the Huawei Y9 2019 USB driver and their solutions: huawei y9 2019 usb driver
For a comprehensive experience, Huawei recommends using official management suites that bundle these drivers: Huawei Y9 (2019) Micro USB OTG Flash Drives - MyMemory Even with the correct driver, issues arise