Problem uploading with Nano

Hey everyone, I know this is a recurring issue but none of the fixes I found worked for me.

I am using an original Arduino Nano (not the chinese knockoffs).
When I try to upload a basic example sketch (blink) to the board, the error message shown is:

avrdude: stk500_recv(): programmer is not responding

I am using the pretty sure I am using the correct serial port and have selected the right board at ATmega328.

I am new at this stuff so apologies for missing any obvious details I am doing wrong.

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cannot find that as an option under the boards menu.
I am using IDE 1.8.5 and AVR boards 1.6.21.

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