One common theme is the exploration of unrequited love. It could be that a female character has feelings for Plisetsky but is too shy or afraid to express them. Another theme is the struggle against societal norms. In some fanfictions, the female characters may face difficulties in their relationship because of the world they live in that may not be accepting of yuri relationships.
There could be a fanfiction where Yuri is kidnapped for ransom. The kidnappers target him because of his fame and the wealth associated with his skating career. His family and friends are distraught but soon gather resources and work with the police to try and rescue him. They face many challenges along the way, like deciphering the kidnappers' demands and finding their hideout.
It could be quite an interesting experience. They might be surprised at the different interpretations of their relationships and stories. For example, Viktor might be amused by how some fanfictions exaggerate his charm. Yuri could be either flattered or a bit embarrassed by how his insecurities are explored in some fictions.
Some fanfiction platforms like FanFiction.net might also have female yuri Plisetsky fanfiction. However, it may be a bit harder to find compared to AO3. You could try searching for key phrases like 'Plisetsky and female character yuri' to see if anything relevant pops up. Another option is to join fan communities dedicated to the source material of Plisetsky and ask for recommendations there. They might be able to point you to some great works that fit the female yuri genre.
Rivalry - since they are both skaters in the same field. The fanfiction might show their competition on the ice and how that affects their relationship off the ice. For example, their rivalry could fuel their personal growth and eventually lead to a more amicable relationship. It can be really interesting to see how different authors handle this aspect.
One common theme is friendship. Female characters often form deep and meaningful friendships with Yuri. For example, they might support each other through tough skating competitions. Another theme is self - discovery. Yuri may learn more about herself through her interactions with female characters.