That was the reason why I stopped mining with BTC ASIC units since the profitability dropped a lot and the electricity rate increased.

Maybe you can try other units that can mine other coins but for BTC ASIC units your profit is negative I've tried that I also lost in d3 units it just makes noise with negative profit.

Check this site for profitable ASIC units https://www.asicminervalue.com/

And I suggest to read this "First time/Small miner reference for getting started."
But if your plan is for learning purposes then you can try USB ASIC miner like Compac F or for DIY check BitAxe. It consumes less power compared to big units like antminer s21.