Hello Hassan9939,
The Activation Lock is a security feature designed to prevent anyone else from using your MacBook if it's ever lost or stolen. Assuming you are the rightful owner, here are some steps you should follow to address the Activation Lock:
1. Proof of Purchase: Gather your original proof of purchase for the MacBook Pro. This should ideally include the receipt from the online platform where you bought it, showing the serial number of the device and your details as the buyer.
2. Contact Apple Support: Reach out to Apple Support with your proof of purchase at hand. They will verify the ownership of the MacBook and can assist in removing the Activation Lock. You can start this process by visiting getsupport.apple.com or by calling the Apple support hotline in your country.
3. Previous Owner: If you're in contact with the person or company you purchased the MacBook from, ask them to enter their Apple ID and password on the Activation Lock screen. If they're not nearby, they can remove the device from their account by signing in to iCloud.com, going to Find My iPhone, selecting the device, and clicking "Remove from Account."
4. iCloud Account Recovery: Since you mentioned having the last iCloud account that was used on the Mac, if that account is yours, you can try Apple's account recovery process if you're unable to remember the password. Visit iforgot.apple.com to start this process.
5. Service Center: If online support doesn't resolve the issue, visiting an Apple Authorized Service Provider or an Apple retail store could be the next step. Again, take your proof of purchase with you.
Please note that without proof of purchase or the cooperation of the original owner (if the Apple ID is not yours), it will be very difficult to remove the Activation Lock due to Apple's strict security policies.
It's always recommended to regularly back up your data and keep your device's software up to date to avoid such situations. Also, note down and store your device credentials in a safe place.
I hope this information helps you regain access to your MacBook Pro.
Warm regards, 🍏💻