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but it did increase in my case

I have too many tittle tag issue in site crawl error but when I checked manually for the error there is no title in source code.

Please Help me to understand

Thank you for your response

You covered all my queries regarding Disavow list. same my company also hired a seo agency that left a lot  of Sammy links that hurt the ranking as obvious.

While flagging a URL  as a Spam what aspects should I consider ?

Thank you for your Response .

As I have been through this article. i want to know that what aspect we should be checking while flagging a link as an spam?

no,but last time when i submitted disavow list it helped me in increasing my Domain Authority. and previously my company hired a seo agency to do the work. so we eventually have a lot of Sammy links

what aspect should be checking while submitting disavow link ?