Before raising from the public, we recommend that you reach out to some potential investors you already know and get them to make a soft commitment. Why would a stranger invest in you if the people who know you best won't? If you can get at least €50,000 in soft commitments, it is much more likely you can raise money on Wefunder successfully.
Other things that are helpful to have ready are a pitch deck and financial statements. Feel free to reach out and a team member can guide you through all the nuts & bolts.