Insert Row when 2 conditions are met - excel

Question

I have created below code which works like IF Col"B" any cell <> "" And Col"L" any cell = "Leop" then add row below to the active cell.
I mean I'm trying to achieve is to insert single row after certain row which contain in column B any value, and if column L in same row contains value = "Leop". Then add the row after that certain row.
But an error is appear. Compile Error: Invalid use of property on xlDown
Your help will be appreciated to fix it.
From this:
to this:
Sub firstcondition()
Dim ws As Worksheet
Dim LRow As Long
Dim rng As Range
Dim rng2 As Range
Dim i As Long
Dim p As Long
Dim dat As Variant
Dim datt As Variant
Dim IRow As Long
Set ws = Thisworkbooks.Sheets("Sheet2")
With ws
LRow = .Range("A" & .Rows.Count).End(xlUp).Row
Set rng = .Range("B2:B" & LRow)
Set rng2 = .Range("L2:L" & LRow)
dat = rng
datt = rng2
IRow = Selection.Row
For i = LBound(dat, 1) To UBound(dat, 1)
For p = LBound(datt, 1) To UBound(datt, 1)
If dat(i, 1) <> "" And datt(p, 1) = "Leop" Then
Rows(IRow + 1).Select
Selection.Insert Shift: xlDown
End If
End Sub
It will be like in formula:
IF(AND(B2<>"",L2="Leop"),"InsertRowBelow to Row 2 If condition is met","")
and will drag it down to the lastRow.

Answer 1

Thisworkbooks.Sheets("Sheet2") should be Thisworkbook.Sheets("Sheet2") and missing = in Selection.Insert Shift:= xlDown
Inserting or deleting rows will change the last row number so start at the bottom and work upwards.
Option Explicit
Sub firstcondition()
Dim ws As Worksheet, LRow As Long, r As Long
Dim n As Long
Set ws = ThisWorkbook.Sheets("Sheet2")
With ws
LRow = .Range("B" & .Rows.Count).End(xlUp).Row
For r = LRow To 2 Step -1
If .Cells(r, "B") <> "" And .Cells(r, "L") = "Leop" Then
.Rows(r + 1).Insert shift:=xlDown
n = n + 1
End If
Next
End With
MsgBox n & " rows inserted", vbInformation
End Sub

Answer 2

Try this with autofilter, you dont have to loop through each row. So it will work faster for larger data.
Option Explicit
Sub firstcondition()
Dim ws As Worksheet
Dim LRow As Long, cl As Range
Set ws = ThisWorkbook.Sheets("Sheet2")
LRow = ws.Range("A" & ws.Rows.Count).End(xlUp).Row
ws.Range("L1:L" & LRow).AutoFilter 1, "Leop"
For Each cl In ws.Range("_FilterDatabase").SpecialCells(12).Cells
If ws.Range("B" & cl.Row) <> "" Then
cl.Offset(1).EntireRow.Insert Shift:=xlDown
End If
Next
ws.AutoFilterMode = False
End Sub