seo my mobile site?

can anyone give me some tips/suggestion to do seo my mobile site?

Thanks in advance

SEOing mobile site is just like SEOing any regular website, you can search around for tons of threads on the topic

Get more quality links from relevent mobile sites, forums etc.

The common technical SEO problems that you would find while auditing your site: -

1. Site loading speed on a mobile device – Make it fix by using CDN, fewer plugins, simple well-coded theme and Responsive web design configuration.

2. Image optimisation: Use jpeg image file format, compression and Gzip

3. Server response time: Contact your hosting provider to take the possible actions

4. Landing page redirections: Redirection increases the HTTP requests which further increases server response time.

5. Minify HTML, CSS and JavaScrip: Remove unnecessary commenting from coding area.

Well SEO for mobile site starts with having a proper mobile template in place - a good one would address all the basic seo needs already and there's very little that you should worry after installing/running the mobile template respectively.
Another major aspect of the mobile site would be implementing AMP - this is the latest gig by G in which they have promised sites with AMP running would have advantages (not that I am seeing), but since that's what G is saying, you should definitely take AMP very seriously.
Once AMP is installed, the AMP page would be cached on G, and when someone opens your page, they will access the AMP cache first which has a very fast loading speeds, which the speed would be a bonus for your site in that aspect.

Most important aspects are speed and compatibility.

Speed is mostly determined by server performance and file size of the website. So work on that.

Compatibility is achieved by responsive design.

First of all your site should be responsive and don't use too many directories. Choose the right viewport and improve your site speed and now get more quality links from relevant sites.