This is the 3298th most frequent Japanese word.
思い出す
To recall or remember.
Here, '思い出す' is used to indicate recalling or bringing a memory of the past to mind.
昨日の失敗を思い出します。
I remember yesterday's mistake.
In this context, '思い出す' is used in its potential form '思い出せない' to express the ability to recall memories.
小学校の友達の名前がなかなか思い出せない。
I cannot easily remember the names of my elementary school friends.
Here, '思い出す' is used to convey the act of reviving past happy experiences prompted by an external trigger like a photo.