>>11612810REAL ANSWER:
1. School picking back up
2. Exams
3. Covid restrictions lifting
4. People have less time to watch vtubers
5. More vtubers than ever
6. Kiara's brand power is lower than everyone else in her gen.
Popular vtubers have a more generalized character design, ie the Shark, the Rabbit, the Duck, The Reaper, the Octopus, the Detective, the Dragon.
These things are more potent than a phoenix, which Kiara isn't able to play into visually very often.
A rabbit vtuber has carrots, a shark has underwater theme, a rapper reaper has a scythe, Subaru is an anomaly just because her career has been a roller coaster starting with a sporty tomboy to a creepy ASMR duck to police officer to princess lover.
Korone is a dog so she has an easy grab with dog-related things like bones and being energetic and protective.
Okayu is a cat, same deal.
Coco had the dragon buff, but even then she still is a natural memelord like Fubuki.
Ina's initial Cthulu theme wore off FAST, but she saved it by turning into an octopus.
A phoenix's only visual aide is that it bursts into flames when it dies and rises back up from its ashes. Likewise, Kiara always seemed most Phoenix-like when she got banned and re-debuted, since her model has no burst-into-fire-and-ashes feature (which could get tricky since she is Austrian) and that's hardly a feature in most games. Unless she wants to start streaming DARK SOULS or something designed around dying a lot. Everyone else in her gen, as well as a lot of the big vtubers that don't depend on past lives/personality alone, all have some strong character theme that can be easily visualized.
TLDR: The best way for Kiara to save herself would be to commission a feature for her models which allows her to burst into flames, be a talking pile of ashes, and then reform into a new Kiara. She could even have her reform-rate be tied to comment rate or something.