well
The word 'bene' in Italian is an adverb mostly used to denote something done correctly or in a satisfactory manner. Similar to English, it can be used to respond positively to a question about one's wellbeing, such as in 'Come stai?' - 'Sto bene' (How are you? - I'm well).
I'm fine, thank you
This is a simple response to someone asking 'How are you?' in Italian. 'Sto bene' means 'I'm fine'. 'Grazie' means 'Thank you'. It's commonly used in casual conversations.
I work well in a team
This phrase could be used in a professional context, when you are talking about your abilities. The subject, 'I', is implied in Italian. 'Lavoro' means 'I work', 'bene' means 'well' and 'in squadra' means 'in a team'.
The pizza is very good
This is a statement of opinion about the quality of the pizza. 'La pizza' means 'The pizza', 'è' means 'is', 'molto' means 'very' and 'bene' is used here to mean 'good'. Although 'bene' typically means 'well', it is sometimes used to mean 'good' in the context of food or taste.