My whole life and I'm still learning lol..it's my native language.

I didn't spent a lot of time on learning and now i don't have result, but now it needs for my job. During last three months i am spending more time but i understood it isn't enough. I don't know how prople learn new languages for shot time. For me it is something impossible 😞

It took me about 2 years to master English

as for me, it took me five years in immersion (France) (90% of my time spent on speaking), my level was  B1 ... for English, only listening until now 15.000 hours, I'm very confident in both, but I think I need at least two more years to improve my English...on the other hand, my IQ is only 118....

Yes, I think it takes about 5 years of regular, dedicated studying of a foreign language to get to a level where you can communicate effectively. Having said that, I’ve been studying formally with a text book. Now I realise that if you spend more time just listening to your target language (people, radio, television, films, music, audio books) with less concentration on grammar, then you will become a more confident speaker far more quickly!