New Altcoins or tokens are ERC20 smart contracts on ETH it is cheaper and easy to make profits.
Instead of starting from scratch, mining coins and waiting several years make your tokens and start earning.
If you do not know many details about mining and you do not have the devices at a cheap price or are thinking of buying them, it is better to use that money in trading instead.

You can mine some coins with your computer, but their value is not equal to the energy costs that you charge your device with.