Hi Ana,
Welcome to Microsoft Community.
It sounds like your Surface Arc Mouse is having trouble connecting to your MacBook Pro or other laptops.
According to the information you provided, your MacBook Pro only supports Bluetooth 2.1 [MacBook Pro (13-inch, Late 2011) - Technical Specifications - Apple Support], and to use Surface Arc Mouse your device needs to support Bluetooth 4.0 or higher. Use Microsoft Arc Mouse or Surface Arc Mouse - Microsoft Support
Disclaimer: Microsoft provides no assurances and/or warranties, implied or otherwise, and is not responsible for the information you receive from the third-party linked sites or any support related to technology. Your SincerelyHahn. W - MSFT | Microsoft Community Support Specialist