its bad to crack a wpa2 wifi password with my computer_ the router will store my mac address

Yes, attempting to crack a WPA2 Wi-Fi password without authorization is illegal and unethical. It constitutes unauthorized access to a network, which is a violation of laws in many countries. Additionally, as you mentioned, the router could log your MAC address and other identifying information, which can lead to consequences such as being banned from the network or legal action. If you're having trouble with your Wi-Fi connection, it's better to contact your internet service provider or the network owner for assistance. Always seek permission before attempting to access any secured network.