month number to month text in oracle sql

I have this query that shows the number of flights each month, but the month appears in number format and I want to convert the month number as text.

Here is the query:

select to_char(f.departuretime, 'yyyy-mm') month, count(*) numberofflights
from flight f
group by to_char(f.departuretime, 'yyyy-mm')
order by numberofflights desc;


2022-05     7
2022-11     5
2022-08     3
...         ...

I want to display the months like “2022-MAY” or just “MAY” and so on.