flash drive incompatible

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You may need a simple adapter, a USB A to USB C adapter. You can find these for less than $10 on Amazon. For example:

https://www.amazon.com/Adapter-ANDAPA-Compatible-MacBook-Thunderbolt/dp/B093292QQ9/ref=sr_1_1_sspa?crid=1VXTF3640J9YN&dchild=1&keywords=usb+a+to+usb+c+adpater&qid=1623340154&sprefix=usb+a+to+usb+c+adp%2Caps%2C306&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzTEQ4UVdHUE9JTTNHJmVuY3J5cHRlZElkPUExMDI2NTU5MTlBRENYN0pISzdGUiZlbmNyeXB0ZWRBZElkPUEwMTEwNjIyMjc0T0RKR05EVlg0QiZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

Is your USB port USB-C (the oval one) instead of the older square USB ports?