For me personally, I use Ahrefs. It has a lot of features that help me every time. And the analize it gives helps me to understand my website more accurately.
I also use SEMrush and Moz to get a clear idea about the website’s performance, analyse the website more carefully.
And with all these tools I am working on my website and I come to know the sources of my backlinks so I am much aware of its DA and PA checker, which help to separate the high rating backlinks and toxic backlinks.