cant chang button text permonently

<form id="form1"  runat="server">
    <div>
    <p id="our mission">
        <asp:Button ID="Button1" runat="server" Text="Button" />
        
        <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">LinkButton</asp:LinkButton>
        
    </p>
        <p>
            <asp:TextBox ID="TextBox1" runat="server" Visible="False"></asp:TextBox>
            <asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="Button" Visible="False" />
        
    </p>
    </div>
    </form>

protected void LinkButton1_Click(object sender, EventArgs e)
  {
      TextBox1.Visible = true;
      Button2.Visible = true;
  }
  protected void Button2_Click(object sender, EventArgs e)
  {

          Button1.Text = TextBox1.Text;


          Button1.ID = TextBox1.Text;
          Button2.Visible = false;
          TextBox1.Visible = false;