Can you understand foreign languages? If yes, any tips?

Hi everyone. English is not my first language and I don’t live in an English-speaking country but I work in an international environment. I’ve noticed that my new (I become a bilateral user two years ago) speech processor, nucleus, enables me to understand spoken English without subtitles but I’m nowhere as good at comprehending English as I am at understating my first language.

I’m wondering if improving my comprehension of English is possible and worth trying. Has anyone successfully trained themselves to understand a foreign language? If yes, what did it take, and what was your routine? Any advice is welcome.