Kotlin Firestore get data after search - firebase

Question

I can search firestore with mutable list of keywords via kotlin. But before of the search i can see all user details in recyclerview. But at the end when i search sucessfully a username then user comes the screen but i dont see user's details. In addition when i clcik on user it is possible see userdetails in userdetail acitivity without any problem. The main problem focused on after search procces. I need to fix it Thanks in advance))
Here is my result Here is my Firebase Firestore document
It is my data class
data class publiks(
val username: String = "",
val fullname: String = "",
var rating : Long = 0,
val rank: String = "",
val downloadUrl : String = "",
val userID : String = ""
) : Serializable
It is my some Activity codes
private lateinit var auth: FirebaseAuth
private lateinit var prUsers: RecyclerView
private var searchList: List<publiks> = ArrayList()
private var database: FirebaseFirestore = FirebaseFirestore.getInstance()
var posts_list = ArrayList<publiks>()
private var recyclerViewAdapter = new_adapter(posts_list, this)
private lateinit var swtest: EditText
////
override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
get_information()
val searchText: String = swtest.text.toString()
searchData4(searchText.toLowerCase())
}
})
}
private fun searchData4(searchText: String) {
database.collection("ProfPic").whereArrayContains("lowercase_username", searchText).
get().addOnCompleteListener { task ->
if (task.isSuccessful) {
searchList = task.result!!.toObjects(publiks::class.java)
recyclerViewAdapter.post_list = searchList
recyclerViewAdapter.notifyDataSetChanged()
//////
private fun get_information() {
database.collection("ProfPic",).orderBy(
"Username",
Query.Direction.DESCENDING
).addSnapshotListener { snaphot, exception ->
if (exception != null) {
Toast.makeText(this, exception.localizedMessage, Toast.LENGTH_LONG).show()
} else {
if (snaphot != null) {
if (!snaphot.isEmpty) {
val documents = snaphot.documents
posts_list.clear()
for (document in documents) {
val usernamelady = document.get("Username") as String
val fullnamelady = document.get("Fullname") as String
val ranklady = document.get("Rank") as String
val ratinglady = document.get("Rating") as Long
val downloadUrl = document.get("downloadUs") as String
var userID = document.get("userID") as String
val download_post = publiks( usernamelady, fullnamelady, ratinglady, ranklady, downloadUrl, userID
)
posts_list.add(download_post)
}
}
recyclerViewAdapter.notifyDataSetChanged()