You just earned 134 sats running a PC for 13 days? Why keep building if you lose already from your first build?
The weird part is you mention a USB stick but not from the site above. Almost what I see are CPU names; none of them mention ASICs.
However, the article you link above mentions the Gekko Gekkoscience USB stick; it seems it's around 300 GH/s. If you mine in NiceHash, you can earn more than that.
Why not mine solo instead, and maybe you could hit a jackpot? Or if you looking to make profit with a USB stick, then try building a solar instead of using your home electricity or renting it out like in miningrigrentals.
Engineers used to be taught by mentors to calculate the cost-effectiveness of their inventions.
Let’s imagine a device consumes 400 watts, at 25 cents per kilowatt-hour, you would pay $72 a month. That isn't a huge amount for the US or Europe. Why go to the trouble of building a complex system for such low costs?
In my country, I would pay five times less.