I'm not 100% sure about this, but I think that this name, Alya, might be related to the Arabic names Ali, Aliya/Aliyah/Aliyya/Aliyya, Aali, and Aaliyah. They all look very similar, and have the meaning of "sky, heaven, sublime, high, lofty/loftiness". :D.
https://www.nordicnames.de/wiki/Alya