I was in your position when I first started but I just ended up doing extra work, like using YouTube, GitHub, websites, ask lecturers, go to support sessions, ask friends, or use forums. youtube is your best friend especially for cs because there's plenty of tutorials.
All university courses are pretty much like this, they teach you the very basic, but it's up to you to go home and do self study on your own time.
It is scary at first but then you get used to it don't worry. If you find the work way too hard even after doing extra self study and getting all the help you possibly can then you can look into changing courses.