Bitcoin mining hasnt been profitable for most retail people for the past decade pretty much. Only those with ultra low power rates could mine at a profit. What has been profitable until a year ago or so was GPU mining which is altcoins like ETH.

Even if you had decent power, you had to pay a huge amount of money for the miner ASIC to begin with and sometimes the ROI was 12 months or so. Some people got lucky and bought used miners who had free power at school or work. They always made profit, but for the majority of people it was always an uphill battle. Now its mostly industrial companies which are mining Bitcoin. And ETH GPU mining is no more since it went POS. Those days are long gone.