upkeeping the city and country that you live in
There are three parties involved. Not one. It is the seller, the buyer and the platform. You are making a business transaction in the US. Do "you" collect the money in your home country's currency or in US Dollars? Actually you can add 4-8 more parties involved to that equation. An actual bank for seller and buyer. A parasite service like paypal and payoneer/stripe and maybe one or two credit cards companies.
Depending on jurisdiction, sale items have to show the price the customer pays - or not. Prices on itch are displayed without tax, as is customary in US.
In the end, of course the buyer pays for everything, including your item. Your business calculations should reflect that in your pricing.
Who said I want to evade taxes?
You deem taxation as unjustified, calling it theft makes that very clear. You even want to evade taxes by not selling in the first place. ;-)