How to identify a toxic link to own website?  and send me the tool link

If the website hosting the link has low trust, it is a potential candidate for your toxic backlinks list. Toxic backlinks may not be high-volume in the sense that they come in large numbers. For example, they could be just a few paid links; they could be links from link schemes or link-networks.

Typical signals coming from toxic backlinks:
websites with low trust;
links with unnatural anchor text (keyword focused).