Phone is redmi note 11 4g(selenes). I followed this solution but I think I missed something. miflash unlock or miflash doesn't work cause phone is locked. I tried few solutions but it didn't work. Ist there any way to fix this?
Its doesn't matter for official tolls if its locked or not. Official tolls work with locked adn unlocked bootloaders.
You mentioned that you have "selenes" Redmi Note 11 4G which seems to be a china model. if its MTK device than SP flast tool is fine or else stuck to MI Flash only and check with the fastboot files.
Check the link as per the device mentioned -
The ultimate script that provides firmware packages for Xiaomi devices.
xiaomifirmwareupdater.com
You will need to extract the files using 7 ZIP till you get the image folders and try to flash it
If stuck share screen shots of the error message and make sure proper drivers are installed