I‘m also from the Swiss and for this stuff i always use aliexpress. Very good price and never had any issues. https://a.aliexpress.com/_mtiKwFE Just search for „usb-c to mini“ and you find lots of options. generally you can say the higher the price the better the quality. also take note of the shipping costs, sometimes costs are „hidden“ in there. PM me if you need help or have questions.