Aged websites have a SEO advantage
It can take some time until your new website will show in the Google results. Google will only index your website if other websites link to your site. It is a web of websites connected to each other. That is why the crawlers of Google are often called spiders.
If you are after high rankings, you first need to earn Google’s trust. It usually takes about 4 to 6 months to gain a minimum level of trust that is needed to get high rankings.
Make it easy to parse your pages
If you have an established website it can be relatively easy to get high rankings in Google. But if you have a new website (<1 year old), you need to do everything to get more credit for high rankings. Make sure your pages are easy to index and your site's menu is good and structured. Optimize your content for the keywords you want to rank for.