Conversation meetings and tandems
To become more confident in French, the best thing to do is speaking. You can for example take part in conversation meetings.
You can also find a French-speaking partner to start a tandem with you: you and your partner will both speak in your mother tongue and learn from each other. To find a partner, go to tandem-linguistique.org (website in French only).
You can find out more on linguistic activities locally at the closest university or Alliance française.