Hey there and welcome to the Samsung UK and EU Community Forum
Firstly, you may wish to post on your local forum.
But to answer your question, your device is being used outside of the region it was intended for so it may not receive it.
Use Smartswitch on a pc and connect your device to said PC to see if you can force the update that way.
I am not employed by Samsung nor do I receive any remuneration as a Samsung Members Star.
My device is an S25 Ultra.