The USB-C cable doesn't fit my Android phone

Phones port is different to the cable provided 

You can purchase a USB-C to Micro USB converter which should solve the issue. See below link:

https://www.amazon.co.uk/Duttek-USB3-1-Adapter-Converter-Silver-OTG/dp/B078JDKPJP/ref=sr_1_3?crid=SIDUOCH2PSUL&keywords=otg+usb+c+adapter+micro+usb&qid=1568029993&s=gateway&sprefix=otg+usb%2Caps%2C131&sr=8-3