How to change the font in recycler view?

I have a list of Button type TextViews like set in a horizontal RecyclerView and I'm trying to change the font of the text of these buttons and it's not working. I've changed the font in the XML file of my item to exo, and tried to use many tips of view instead of the TextView but i can't change the font anyway. is there any limitation about customization of the view when using RecyclerView or I'm doing it wrong?

p.s. I can't change the padding of the TextView either.

My RecyclerView item:

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="wrap_content"
        android:layout_height="32dp">

    <TextView
        android:id="@+id/rpgListBtn"
        android:layout_width="130dp"
        android:layout_height="32dp"
        android:layout_weight="1"
        android:background="@drawable/ic_rpg_list"
        android:fontFamily="@font/exo_teste"
        android:gravity="center"
        android:includeFontPadding="true"
        android:paddingLeft="8dp"
        android:paddingRight="8dp"
        android:text="D&amp;D"
        android:textAllCaps="false"
        android:textColor="#000000"
        android:textSize="13sp" />

    </LinearLayout>

My RecyclerView:

<androidx.recyclerview.widget.RecyclerView
    android:id="@+id/rpgListView"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginTop="16dp"
    android:clipToPadding="false"
    android:paddingLeft="22dp"
    android:paddingRight="8dp"
    android:orientation="horizontal"
    app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/escolha_um_" />

my adapter:

package com.example.rpglink.Adapters;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.example.rpglink.R;
import java.util.List;

public class RpgListAdapter extends RecyclerView.Adapter<RpgListAdapter.MyViewHolder> {

    private List<String> titulos;

    public RpgListAdapter(List<String> titulos) {
        this.titulos = titulos;
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {

        View itemLista = LayoutInflater.from(parent.getContext()).inflate(R.layout.rps_list_view_holder,parent,false);

        return new MyViewHolder(itemLista);
    }

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {

        String titulo = titulos.get(position);
        holder.titulo.setText(titulo);
    }

    @Override
    public int getItemCount() {
        return titulos.size();
    }

    public class MyViewHolder extends RecyclerView.ViewHolder{

        TextView titulo;

        public MyViewHolder(@NonNull View itemView) {
            super(itemView);

            titulo = itemView.findViewById(R.id.rpgListBtn);
        }
    }
}

the implementation of recycler view in the activity:

package com.example.rpglink.Activitys;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.os.Bundle;
import com.example.rpglink.Adapters.RpgListAdapter;
import com.example.rpglink.Helpers.HorizontalSpaceItemDecoration;
import com.example.rpglink.R;

import java.util.ArrayList;
import java.util.List;

public class HomeC extends AppCompatActivity {

    private RecyclerView recyclerView;
    private RpgListAdapter adapter;
    private List<String> lista = new ArrayList<>();

    public HomeC() {
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home_c);

    criarTitulos();

    recyclerView = findViewById(R.id.rpgListView);

    recyclerView.setHasFixedSize(false);

    RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext(), LinearLayoutManager.HORIZONTAL, false);
    recyclerView.setLayoutManager(layoutManager);

    adapter = new RpgListAdapter(lista);
    recyclerView.setAdapter(adapter);

    recyclerView.addItemDecoration(new HorizontalSpaceItemDecoration(32));


    }
    public void criarTitulos(){
    this.lista.add("D&D");
    this.lista.add("CyberPunk");
    this.lista.add("Call of Cthulhu");
    this.lista.add("Tormenta");
    }
}