* Make sure the driver is installed completely

* Download the MIUIfluid then extract it

* Enter bootloader/fastboot mode

* Go to the MIUIfluid file and double click on        flasher.bat (without magisk) or                 flasher_include_magisk.bat (include magisk)

* Wait until flashing is complete

* Boot process is a little long, it's normal

Note: when entering fastbootd, it only says waiting for any device. please go to device manager then look for the Other Device section, later there will be this cellphone code, namely (M2101K7BNY) please right click then update driver, then click browse my computer, click let me pick from a list device driver, then click Android Device and click next. then select MediaTek and ADB interface. done