Simple Sentences:
* I often go for walks in the park.
* She often forgets her keys.
* He often eats breakfast at his desk.
More Complex Sentences:
* Although I enjoy reading, I often find myself too tired to do so at night.
* They often visit their grandparents, who live in the countryside.
* The weather in this city is often unpredictable.
With Adverbs:
* I very often go to the gym on Mondays.
* She quite often has lunch with her colleagues.
* He rarely, if ever, goes to the movies.
With other words:
* We often talk on the phone, even though we live close by.
* She often feels overwhelmed by her workload.
* He often dreams of traveling the world.
As you can see, "often" is a versatile word that can be used in many different ways to express frequency.