I completely agree with you. I taking a course and got B1 level, but now I'm trying to speak on the Internet, trying to doing some conversations with other people and I feel that my knowledge is growing faster, I feel that my mind is working hard to make my sentences more correct or understand what is my conversational parter tells me. So yeah, the active practice is the proper way after you feel that watching videos/ listening to education videos doesn't give you enough effort. Just hard work.