I figured out a way to format MicroSD Card as internal storage in Redmi Note 7 Pro or in MIUI latest versions. : r/Xiaomi
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Redmi Note 7 Pro Hybrid sim Solution | How to use Dual sim card & micro SD card in Redmi Note 7 /Pro - YouTube
Xiaomi launches Redmi Note 7 with 48MP camera
SIM Card Tray and Micro SD Xiaomi Redmi Note 7 Black - ChipSpain.com
Dual Sim & SD Card Simultaneously on Redmi Note 7 Pro & Redmi Note 7/ 7S Working or NOT - YouTube