Why I haven't got one ui 5 yet. My device is galaxy s20 5gModel number SCG01Country: BangladeshMy friend with a53 already got the update but i haven't got the update yetWhen will i got the update

Android 13 based one ui 5 is already available for galaxy s20 5g but I haven't got the update yet and the last security patch is from August 2022When I'm gonna get the update? Model Number: SCG01County: Bangladesh

So I'm using galaxy s20 5gModel number: SCG01 I'm not getting updates regularly as s20 is a device which is supposed to get monthly updatesThe last security patch is of August 2022Can anyone tell me how often will I get updates and when I'll get andr...