if your screenshot is accurate then your site is not even 1 month old, so it's too soon to draw any conclusion. The honeymoon between new sites and google oftentimes lasts for 1-2 weeks during which time you'll see traffic (my guess is that google are testing the peoples' reactions to your site's content and, based on this feedback, they will decide whether to rank your site, and where), but once the honeymoon is over your site will either rank somewhere, or is nowhere to be seen.
And if your site is sandboxed you can expect NO traffic for anywhere between 3 months and 2 years, so I would say keep working on the site as normal (keep publishing content, keep building internal and external links) until the site starts ranking for real. If it doesn't happen within 1 year then you can assume that something is wrong, but 1 month is too little time to panic
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