You do not need a "crack" to use Packet Tracer. To get the software safely and for free: What is Cisco Packet Tracer? | Free Training and Download
Cisco Packet Tracer 8.1.0.0722 is a network simulation tool officially released by Cisco in late 2021 as a maintenance update to the 8.x family. You do not need a "crack" to use Packet Tracer
It is important to note that through official channels. Searching for "cracks" or "license keys" for this software is unnecessary and exposes your system to significant security risks. Official and Safe Way to Download You do not need a "crack" to use Packet Tracer