Hi @pritadewii
This can be achieved by adding trigger condition in the "Recurrence" action.
Firstly, set the flow to trigger daily along with time zone, start time etc. in the recurrence action:

Now, to add trigger condition, click on ellipses menu(...) & select "Settings" from sub menu:

Scroll down, add the condition & click Done:

@equals(dayOfMonth(utcNow()), 25)
Once trigger condition is set, the flow will run on 25th date of each month.
If this helps & solves your problem, please remember to give a 👍 and accept my solution as it will help others in the future.
Thanks