I suggest looking at sites like freessound and pixabay. You can download audiofiles and music here to use in your game! Some have liscenses but the most are free to use without need for attribution. Are you going to continue working on this game?
Thanks, i'll look into it :) To be honest i'm not sure i'll update this game any more than that, but i'll definitely try to improve on the side and maybe participating in other jams !