Facebook dark mode missing

[Mahmoudth66]

Redmi note 10 miui14
Facebook dark mode missing
I tried to turn the dark mode from dark mode settings but I can't found him here
And in the Facebook settings i can't found dark mode option too
Tried to install another versions but nothing changes
Any help

 

[gogocar62]

the Facebook app has its own DM.

 

[Mahmoudth66]

the Facebook app has its own DM.

Nothing in the settings
How can i fix that