Questions & Answers about Općenito volim miran park više nego bučan bar.
Općenito is an adverb meaning “in general / generally / overall / as a rule.”
In this sentence:
Općenito volim miran park više nego bučan bar.
In general I like a quiet park more than a noisy bar.
it tells us you’re talking about your general preference, not a specific situation right now. Without it:
Volim miran park više nego bučan bar.
the sentence still means basically the same thing, but sounds more like a plain statement of preference; općenito softens it to “as a general rule, I tend to prefer…”