How do I fix this. I did everything correct?

I am new to red note. I join groups where hobbyist musicians take turns singing/performing on their musical instruments. I do not know how to speak Mandarin. But I can speak English and Cantonese. One time, the host of the music group said Red Note sent her a warning that the group was speaking too much English. So then everyone quickly switched to Mandarin, at which point, I didn't understand anything other than simple things like "it's your turn to perform". Can someone explain to me what actually happens when you speak English on rednote? Is that a very dangerous ting to do? And what if I speak Cantonese? Some of the groups I join have cantonese speakers. Is speaking Cantonese also very dangerous on red note? I'm not sure what I can or can't do, and what happens if i speak too much english/cantonese. Any insight will help, thank you
/r/AMA/comments/1i4j8uz/im_chinese_and_a_heavy_rednote_user_355_days_in/
I don't know if anyone else goes on Reels, but ever since this weekend, Reels has been randomly showing me content from Chinese creators and "pro China" content similar to XHS (i.e. "China's living in 2050" type stuff). It's not A LOT by any means, but when I'm on it, it's definitely 1 every 15 Reels or so. Maybe it's just happening to me (or to people like me who have accounts on both), but I didn't really get any Chinese content (from actual Chinese creators) before this. Of course, they're speaking English with an accent, but still. Anyway, thought that was funny, especially since I rarely go on Reels anymore since being on XHS.

How do I download the brushes??

Like are there any risks involved, just can you purchase without id verification?