2. Google prohibits Cryptocurrency advertising.
3. The South Korean government created a new rule requiring all traders (traders) to identify with their real names, and checked the suitability of their wallet details with information on local banks.
4. Sales with a large-scale sale method.
5. Speculation of losses at the Crypto market.
6. Regulatory changes to the Crypto market.
7. Increasing hacking cases, losing coins, and decreasing investor confidence.
However, there is certainly the possibility of other factors. Please add if you know it.
As for Google ban, it was one of the big reasons before, but the news is old now, so I don't think it affects the current situation.
I agree with Iyeman, that you should add to the list the point about SEC declining ETF applications. There've been three major price drops over the last two months related to this issue. And SEC might continue to affect the market, since new applications are filed and new rejections are most likely on their way.