Don't know if you heard. But right now there is no profits to be made with GPU mining. ETH had high profitability for years and 2 weeks ago it went POS which means you can't mine it anymore.

You can mine many coins right now, however you will not make a profit when you factor in your electrical cost. There is also ASIC mining which might be profitable with low power but the equipment is not cheap. And that type of mining is not done on a computer but its stand-alone equipment.