Go and find a online community dedicated to the language your learning and search that community for guides and recommendations because it will get you way better resources than what duolingo can offer
And you can structure the way you teach yourself that language to make it easier to learn
It’s better to find resources that you can adapt to your way of learning as it’s better and easier
The Internet also claims to be more experienced in a foreign country than the people living there
People on reddit certainly acted that way responding with their opinions when they think they know better than the people who actually have grown up in that country and experienced it