An H1 tag is an HTML heading used to indicate the main topic of a web page. There should only be one per page.
H1 tags are important because they improve usability and accessibility and help search engines interpret content.
As a general rule, you should avoid:
Duplicate H1 tags
Long H1 tags
Missing H1 tags
The " Issues " tab in Site Audit  reports H1 tag errors. Just search for "h1".
Like here:
H1 Issues in Site Audit
You should also take the time to fix any issues with your H1 tags.
Note  : Be sure to include the target keyword of the page in the H1.
- Improve your Title Tags, Meta Tags and Page Content
If you don't properly optimize your page titles and meta tags, you're missing out on an opportunity to rank well in search engines.  
Not only for your main keywords, but also for keyword variations.
Go to  Google Search Console , then click “ Search Results ” under “ Performance .”
 
Search Results tab in Google Search Console
Make sure the boxes in the top right under “ Average CTR ” and “ Average Position ” are checked.
Average CTR and Average Position in Google Search Console
Scroll down and look for keywords that have high impressions, low clicks and low average position.
This usually means that your page is relevant to queries and is ranking well. But you haven't optimized it by including keyword variations in your content or tags.
Remember that simply adding keyword mentions isn't very helpful.
 
Consider these additional agb directory keywords as topics for additional H2s or subsections.
Rework and re-optimize your page with this in mind. You will likely see an increase in clicks and your search engine rankings.
- Audit Your Site’s Existing Content
A content audit involves analyzing your content to find opportunities for improvement.  
It is important to conduct an audit to understand how to improve the SEO performance of your site.