Arudino doesn't work after disconnecting the USB from the pc even with the code uploaded and the PSU connected

Solder the pins to the Nano and report back what happens when you try the sketch and the circuit

Currently I have only one board that I want to use for learning, in future I will buy another one and then I'll solder that one,thank you for you help!

Why are you so reluctant to solder the pins ? You simply must do it if you want to make good connections to the board

After soldering the pins onto the MCU,

Problem, bread board power rail split:


Solution, bread board power rail split:

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