Though much of The Lord of the Rings: The Rings of Power season 1 plot stems from the death of Galadriel's brother, Finrod, Tolkien canon deems that the elf is still alive and waiting in Valinor. This would have significant impact on the story if it were to be adopted into the Prime Video series, since Galadriel's motivation for defeating Sauron is to avenge her brother. Of course, there's always a chance that The Rings of Power will leave this more obscure detail of Galadriel's history out, especially since Finrod's story was already changed considerably.

https://screenrant.com/lord-rings-power-finrod-resurrect-death-canon/