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From most preferred... CrDroid, EvolutionX, LineageOS, Bliss ROM.

I have had several Redmi phones. Yes, the current unlock process is a convoluted - You need a Xiaomi account. Then you need to toggle "unlock" in Developer settings. Then go to fastboot. Then while connected to your PC, you need the Xiaomi Unlock app to unlock the phone which you need to wait 2 weeks to happen. After 2 weeks, you go back to fastboot and the Xiaomi app, click Unlock and it is done.

(phew!)

It is tedious but not horrible. Once this is done, your bootloader is unlocked. You can then install your own custom recovery, custom rom, etc.

Redmi phones that have Qualcomm processors. Check out XDA forum for which models are supported.

There is no custom rom for this and there won't be. It uses a MediaTek SOC. The bootloaders cannot be unlocked.

I've discovered the wonders of a coconut husk mattress. It is hard with some give.

Fantastic for my back. Can't sleep on soft beds anymore.

Also I use a rolled up towel under my neck for support.

Settings -> Sound and Vibration

You should see Phone ringtone - SIM 1 and Phone ringtone - SIM 2.

You must have the SIMs in your phone to see this.

Can't be explained. Has to be experienced.

A few anime to watch... Akira, Spirited Away, Nausicaä of the Valley of the Wind, Princess Mononoke, and many more.