I found this link:
(Arduino failing loopback test despite working perfectly otherwise - #5 by kprims)
And on the 5th reply, he says the RX/TX pins are connected to the 328P and it’s why the loopback test does not work for CH340 clones. They fixed this problem by removing the RX and TX LED. I did the same thing and it worked however, I still can’t upload a simple sketch. I’m planning on getting a new NANO but the official store ran out of stock. Should I just get another NANO clone or buy the genuine UNO?