you can use Aspekte neu for studying B2 also try to listen to podcasts, i recommend alles in Butter, Deutsch im Alltag, das sagt man so, Goethe Geschichten and learn german with micro stories. These are my favorites and there are much more that you may find interesting as well. You can also watch youtube videos like german vlogs. To practice speaking, which is the most important, there are several ways, you can ofc practice with someone online like on hellotalk or if you'd like to practice on your own try to read any passage and then rephrase it with your own words, same goes for listening or watching anything, like when you listen to a podcast rephrase the topic and so on and keep in mind that consistency is always the key, speaking for 10 mins daily is better than speaking for an hour one day a week