Sure! You can always start a new crowdfunding campaign, by creating a new project page. You will have to follow the different steps of project creation and submission again. Of course you will be be able to copy the content of your first project, by accessing it on your profile page.
However, we advise you to analyze the reasons why your first campaign did not reach its goal: did you prepare it well enough? Did you have a communication strategy? Was your goal adapted to the size of the community you wanted to reach?
Take the time you need to prepare this new campaign and maximize your chances of success!
When you are ready, launch it again!