I personally don’t use Apple products to mine as they are not worth if you look in terms of profit. They are good for productivity, however mining probably the worst. I have tried mining on a iMac, Mac mini, MacBook Pro (all no older then 5 years) and the results are similar to yours.

I have a dedicated Asus Legion desktop with an i5 processor & nvidia 1060 3GB which will earns me about $3 USD per day if I were to run Minergate or NiceHash. However I’m using it to mine alternative coins hoping that one day they will be worth something.