Can I connect my Insignia hearing aid with MacBook Pro?

I'm assuming you're referring to Signia hearing aids.

This is extremely hardware specific. Most hearing aids only support iPhone specifically, but some manufacturer's later add Mac support. You need to contact them directly. Here is their bluetooth technical support number:

800-350-6093

https://www.signiausa.com/signia-hearing-aids/apps-and-accessories/pair-center/

I've had several brands of hearing aids that work well with phones but none worked with a computer. They conneced but never with the quality required to be functional. Hearing aids are not designed to work with computers. Contact the manufacturer.