Atmega328p-pu full setup 3.3v 8mhz

No.
Pins 8 + 22 are GND. Both need to be connected.
Pins 7 + 20 are Vcc. Both need to be connected.
Pin 21 is Aref. You can leave that one unconnected.

Btw, those wires sticking into your female headers are a marginal solution. Soldered connections are far more reliable.

Also, did you verify the correct value of the capacitors around the crystal? They should be 22pF. In practice 18pF to 33pF will likely work OK. It's a common error for people to connect 22nF, which won't work.

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