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@moz559000
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@mohammadrehanseo

1. Never forget internal linking
2. make your website mobile friendly
3. make sure your site loads quickly
4. build high quality backlinks
5. reduce low quality backlinks

@Mind-2-Markets
Domain authority depends on certain factors.

you should regularly update the content on website, because inactivity may result in a drop in DA.
Engaging in excessive link exchange or using automated links etc.
The domain authority of the website may suffer if your backlink profile is overburdened with an excessive amount of identical anchor texts. The rationale is that if your website contains a lot of the same anchor text, Google may conclude that you are attempting to improve the site's position for that particular term. As a result, vary up your anchor texts and avoid using the same term over.
Excessive keyword overload
Slow site speed
Your competitor sites are performing better than your site.

@VS-Gary
Domain authority depends on certain factors.

1. you should regularly update the content on website, because inactivity may result in a drop in DA.
2. Engaging in excessive link exchange or using automated links etc.
3. The domain authority of the website may suffer if your backlink profile is overburdened with an excessive amount of identical anchor texts. The rationale is that if your website contains a lot of the same anchor text, Google may conclude that you are attempting to improve the site's position for that particular term. As a result, vary up your anchor texts and avoid using the same term over.
4. Excessive keyword overload
5. Slow site speed
6. Your competitor sites are performing better than your site.

Hope this helps.