Xiaomi typically enforces a mandatory waiting period (often 168 hours or 7 days) before the final unlock can occur. Step 1: Prerequisites & Account Binding What is a Bootloader unlock? - HTC

This is the most frustrating part of the review.

Unlocking the bootloader on the Redmi Note 10 Pro is a rite of passage for enthusiasts. It’s not difficult but requires patience due to Xiaomi’s waiting policy. Once unlocked, your Sweet becomes a developer’s dream – stable custom ROMs, performance tweaks, and extended Android version updates long after MIUI support ends.

Now, I could flash TWRP. I could install LineageOS. I could root with Magisk.

Turn off the phone. Press and hold the Power and Volume Down buttons simultaneously until the Fastboot logo appears. Use Mi Unlock Tool on PC: Connect the phone to your PC via USB cable.

Go to Settings > Additional Settings > Developer Options0;42b; and toggle on OEM Unlocking and USB Debugging .