How to search in a specific Document library with a keyword using pnp script

[vishalgoyal2472]

I have a document library which have more than 10000 documents.

my client want to export Search result after search with any keyword in document library.

I am trying to build a powershell and trying below query but its not returning any result
$keyword='test'
$SearchQuery1 = '$keyword Path:' + $DocumentlIbURl
$results=Submit-PnPSearchQuery -Query $SearchQuery -All