>>45072746A combination of several factors
1) She doesn't like being the #1 most subscribed Vtuber. It gives her major imposter syndrome. She feels like everyone around her is accomplishing so much releasing Covers and Original songs while the most she can do is karaokes but despite this she's the highest subbed Vtuber.
2) And the reason she isn't putting out Covers and Original songs at a similar rate as people like Calli, Kiara and the JP girls is cause Cover treats her like dogshit. They, more often than not, say no to her ideas and when they say yes they always meddle with it and dilute it down like how the MCU does with directors with creative ideas. The reason everyone else can put out original songs so much is cause a) they have no say in the songs's creation, they just do the vocals and that's it and b) they aren't the face of hololive. That's why Haachama gets away with everything. And this treatment from management leads to blow after blow to her motivation.
3) She's a massive introvert who's lost in Japan and is the busiest she's ever been, doing dance lessons everyday and a shit ton of other stuff we have no idea about. If it wasn't for Kiara and Ina walking her through everything she wouldn't have been in those collabs.