Hii, everyone I'm confused about this which analysis tool is best for SEO? Pls help me in this.

Black hat SEO refers to a set of practices that are used to increases a site or page's rank in search engines through means that violate the search engines' terms of service.

1. Invisible Text. Invisible text is any text that search engines can read, but users can not.
2. Doorway Pages. Doorway pages are pages on a website that are loaded with keywords but have poor page content.
3. Keyword Stuffing.
4. Code Swapping. Code swapping is submitting a text-only version of a web page to the search engines in an effort to gain high rankings for that page. Once the desired positions within the search engines are achieved, the search engine-friendly text page is swapped out for a content page designed for human visitors.

It's depending on your niche and competitor which type of backlinks you should have to make.

Hi, everyone I only heard about white hat SEO, I have been no idea about black hat SEO. Give me some ideas or opinions about black hat SEO, what is this?

Rising your domain authority is a long term process, but there are several ways to do this:-

1. Work on your off-page SEO
2. On-page SEO
3. Increase your site loading speed
4. Make your site mobile friendly
5. Good and unique content
6. Get higher quality backlinks
7. Get link audit as sooner
8. Update regularly
9. Make a cache and effective Webdesign
10. Increase user experience