根据领英数据，营销人员在挖掘销售线索和促进转化时遇到困难的主要原因是什么？请选择所有适用选项。

According to LinkedIn data, marketers struggle with lead generation and conversions primarily due to three factors. First, "未能拥有自己的品牌" (failure to have their own brand) indicates that marketers who haven't established a strong personal or company brand on LinkedIn find it difficult to attract and engage prospects. A clear brand identity builds trust and recognition. Second, "互动方式不当" (improper interaction methods) suggests that ineffective or unengaging communication strategies hinder progress. This could include generic messages, lack of personalization, or not actively participating in relevant discussions. Third, "追求数量，不求质量" (pursuing quantity over quality) highlights the issue of focusing on a large number of superficial connections or outreach attempts rather than cultivating meaningful relationships with qualified leads. The incorrect option, "未能每天在领英上发布动态" (failure to post daily on LinkedIn), is not identified as a primary reason for difficulty in lead generation and conversion; consistent, quality engagement is more important than daily frequency.