Why mine?
By far much cheaper way to get some BTC is to simply buy it.
Mining on the cheap is been dead for awhile now, if you have a truly free power you may have a shoot by buying
some older less efficient hardware.
Macbook = forget it, you wouldn't mine a single 0.01BTC in a century!
You wanna Bitcoin, = BUY it.
Cloud mining is not 99% scam, is like 99.999999% scam, remember that.