Absolute Anime

Hey peeps, I hope you all are doing well. Would you please tell me some of the best applications or sites where I can learn new languages? As a result of covid, I am working from home. The idea of being at home all the time is a bit boring for me, so I want to make myself more productive from a knowledge point of view by learning the German language online and also some other things as well. Please let me know if you know of any institutes of modern languages. I would appreciate it

I primarily use DuoLingo but also use MemRise, both are smartphone apps or accessible via website.