Just build your own copy, give apple $100/year for a developer license, move to a country in the EU, and then you can "sideload" this open-source code onto your device. You also need something running macOS.
Thanks for the giggle. I built a few apps back in the day, back then you could build and deploy on local device, no need to pay 100$, isn’t this still the case if you do not want to deploy on the appstore? Anyway, your comment is worthy of a xkcd.
… or sideboard for free for a week.
Not sure if this was a sarcastic jab or an genuine proposed solution but I laughed either way.
*Purchase $100/year apple certificate or move to a country in the EU.
You can sideload for free for a week or you can buy a 3rd party certificate for $20 dollars. For free you can use sidestore (anywhere, not just the EU) for free, but you need to connect to a WiFi network once a week. You can also build with github actions without a mac