Which form would be the correct form for the reflexive verb "se laver" for the subject "je"?

Can someone answer these, i have no idea

Write a short essay describing what you consider to be a great vacation. include 4-6 complete french sentences such as : je vais à la plage. je visite les musées. make sure you use details. you may copy and paste the accented characters from this list if needed: àà ââ ää çç éé èè êê ëë îî ïï ôô œœ ùù ûû üü (5 points)

How do you write i/he/she went to *blank location* in past tense in french? like. how do i say something like i went outside yesterday, or my friend went to the store yesterday? i really want to understand this, but none of the websites i use are really doing a good job at explaining it