Effective apps for learning norsk

I've been learning norsk of duolingo for nearly a year now and I still feel like I'm getting nowhere. I really want to become fluent in norsk and to be able to easily converse with the locals necause I plan to live in Tromsø when I grow up and none of the websites I've tried is helping me. I can't really afford any paying apps but please please please help me! Also, if Duolingo can be effective feel free to give any tips.