"Clout chasing"
"It's far more likely that she's distancing herself"
Alright, I'm not sure if I should even reply to this because I'm not sure if you even know how to read. Or, you do know how to read and you're just doing this weird thing that people on the internet do, and project themselves into others' situations. Maybe a combination of both because the story directly contradicts your... blatantly incorrect interpretation of the story. I'll try to keep this short and sweet, because you're too far gone to actually engage with in a longform discussion.
Nothing in the story suggests Yuni is a clout chaser. She vented her dissatisfaction with her relationship on an anonymous social media account where nobody should've figured out who she was. Plus, Yuni was in agreement with keeping their relationship a secret, which is why she was so surprised with Nanase told her she told Yuki. So cut the weird obsession with calling Yuni a clout chaser.
Nanase isn't, nor has she ever tried to consciously, or subconsciously try to distance herself from Yuni, if you think otherwise, then you simply taking what's actually happening, and substituting it for your self-inserting fantasy. I shouldn't have to explain this, if what you said was actually happening, this manga would've ended 26 chapters ago.
Nanase doesn't want their relationship public because of what happened in a previous relationship. To the point where she absolutely refuses to do anything that can give someone the idea that she's dating Yuni (refused to take a picture that only would've shown both of their faces facing forward). However, she does these things with Yuki in public without thinking twice about it.
People often misconstrue Yuni's frustrations as her being attention needy, or as you put it, a "clout chaser". Yuni is a much more simple character. She just wanted Nanase to be more of a girlfriend. So when she sees her "girlfriend" treating Yuki better than she treats her, Nanase blowing off an anniversary date, refusing to take an innocent picture, etc. When Yuni blows up during this chapter, it's because she sees Nanase, yet again give Yuki the treatment she wants from her.