Perhaps array doesn't support a not equal clause yet. May be you can do some research and see if you find a code for not equal to array. If not you may need to work out a logic based on your data. Perhaps something like taking the sheet into a collection and then check by adding multiple AND separated not equal to filtering condition on the collection. If that works out then you can dump the collection back to the sheet.
I need to filter a column excluding blanks and "not found"