If range contains specific text then - VBA

How do I create a condition that my worksheet contains a certain text?
I have workbooks that have multiple worksheets, of which some are relevant while some are not. I am trying to do some action on the worksheets that are relevant and the only similarity among them is that they contain "Product Name" in one of the cells. They have different sheet names and the "Product Name" in one worksheet might not be in the same cell as in another worksheet.
So far I've only found solutions for if a particular cell holds specific text, or non VBA solutions for what I'm looking for, but I'll need it to be part of my macro.

I have tried the following code, hoping that if at least one of the cells from A1:AA50 contains "Product Name", then my code will run. However I get an error saying there is a run-time error 13, type mismatch.

Sub testpn()
If InStr(1, ActiveSheet.Range("A1:AA50").Value, "Product Name") > 0 Then
    MsgBox "yes!" 'my code here if sheet contains "Product Name"
    Else: MsgBox "no!" 'my code here for an error message
End If

End Sub

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For further context, not sure if it is a relevant limitation in your suggested code: I need to do multiple conditions, meaning:
Condition 1: if sheet contains "Product Name"
Condition 2: X and Y and Z

If condition 1 is true, then
  if condition 2 is true then
    run my code
    Else: don't run code, error message
  end if
  Else: no error message
End if

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Having trouble with condition 1.

Hope you're able to help!