Well... it wasn't simply because she was inactive. Her few last releases didn't do well and now with all ongoing issues she has a lot to prove as she is basically starting from the beginning.
I look forward to her comeback and I hope she will do well and be back on spotlight.
I mentioned it in my comment, but it doesn't matter if her latest releases weren't as popular. Not every single release will hit the same, that's normal in the industry, there's going to be highs and lows.
And her social media is starting from scratch, but not her career lol. People already know who she is, she's got hit songs and can promote anywhere on shows. Chungha is a known commodity and she's got some of the highest streaming numbers without even releasing songs in 2023.