One of the best ways to learn a language is to listen to some authentic documents (a video, a recording, an audio, a podcast). You get thus exposed to some «input» (S.Krashen) and your ear gets gradually used to the frequency of the language. Oral comprehension will bring you tons of vocabulary but also syntax, grammatical structures and the prosody of the language. I always recommend listening to the news because it is basically such type of vocabulary that you are going to hear in French people’s daily lives….
Here is a short activity that will train your ear : a video about «how polluting it is to buy and wear clothes» followed by a short quizz. Hope you enjoy it ! Let me know what you think about the video in the comment section.