The worst link audit mistake that you can make is to remove all of your links without carefully reviewing and evaluating them. This is often done by unscrupulous agencies that use scare tactics to convince their clients to pay for massive link removal services. These agencies may use tools like Link Detox to generate a high DTOXRISK score, which they then use to frighten clients into buying their services.
However, removing all of your links is not a good idea, as it can have a negative impact on your site's rankings and traffic. It is important to carefully review your backlink profile and only disavow links that are harmful or of low quality.
To avoid making this mistake, it is important to choose a trained professional who is experienced in link auditing and disavowal. You should also personally review the disavow file before it is submitted to Google, to ensure that only harmful links are removed. This will help to protect your site from the negative effects of bad links, and ensure that your link building efforts are effective and sustainable.