Hello Filimon Hailesilasse,
thank you for posting on the Microsoft Community Forums.
BitLocker is a full disk encryption feature included with Windows that helps protect your data by encrypting the drive. It's possible that BitLocker was automatically enabled when you set up your Surface Laptop, especially if you signed in with a Microsoft account. Since you mentioned you have checked your Microsoft but no keys there, it is recommended double-check all Microsoft accounts you may have used. Sometimes the recovery key might be stored under an alternate account. If still can't find it out, please try checking other locations by following the steps in Find your BitLocker recovery key - Microsoft Support.
Additionally, if you have other devices (like another PC, tablet, or phone) that you used to sign in with the same Microsoft account, check the OneDrive or device settings on those devices for the BitLocker recovery key.
Import ant: Microsoft Support is unable to provide, or recreate, a lost BitLocker recovery key.
Hope it helps.
Best regards,
Lei