If you require a full-featured, offline desktop suite but don't want to pay for a Microsoft 365 subscription, several outstanding free alternatives provide excellent compatibility with Microsoft Office formats.
With an illegitimate copy, you have no recourse if the software malfunctions. Microsoft's official support channels and Q&A forums will not be able to assist you, as they are designed to only support properly licensed products. If an "activation fix" breaks, you are on your own. ms office pre activated