Do U feel confident in your 2nd language without ever visiting the country

how?

I'm learning German cos I wanna live there after I finish uni and I worry that I won't be as good as the language as I think cos it's quite likely I won't visit there (like 3 years) untill I'm trying to get a job and do interviews etc, and struggle. Maybe u passed one the leveled exams, but passing an exam is skill, in secondary school in UK every one has to learn a language and most ppl pass but we don't have a strong command of any 2nd language if it's not spoken at home

maybe I'm just overthinking about the future, cos I had an intial plan after graduation but that can't work anymore for reasons out of my control and it's stressing me out.

but I have a lot of international classmates in my course and they all had to submit an English certificate to be allowed on the course and some are really good at English and some really bad at English and I barely understand them, and majority from both groups have never been to America or UK etc