B365M Phantom Gaming 4 flashing red lights

Hey everyone, I recently built my first PC.

My specs are
CPU: i3-9100f
MOBO: B365M Phantom Gaming 4
GPU: MSI Ventus XS OC Edition GTX 1650 Super
RAM: 2x8gb OLOy Warhawk RGB
PSU: Thermaltake Smart 430w 80+
Case (if this matters): Musetex Phantom (comes with 6 preinstalled rgb fans and controller)

Here's my problem: Whenever I turn on my PSU, my motherboard just flashes red. When I try to boot, nothing. None of the 6 case fans power up, nor the gpu, and cpu fan. I am 100% certain that I put all cables and wires in the right slots and they were firmly connected. My brother, who has been building computers for a while now, tried everything he knew, clearing cmos, jumping the motherboard, reconnecting stuff, but nothing worked. There is a chance I possibly screwed up along the way while building this PC, however I don't know exactly what I screwed up on. Any help would be appreciated.

So when you press the power button nothing happens at all?
The board lights up so it's getting power, double check to make sure the Clear
CMOS jumper is not set to the clear position (this will not allow the system to
power on).

Make sure you have your power switch connected to the correct pins on
the front IO header, check your manual to be sure.

If neither of the above help, you may have incorrectly installed the CPU. Remove
it and check for bent pins in the socket or dirty contact pads on the CPU itself.

Dear NoName76,

Thanks for the reply.

If the system boots, try checking if the monitor and monitor cables can work properly by plugging to a TV box or different PC.

With thanks,
ASRock TSD

Also my bad, I should've reworded my last, last post. The post status checker lights do not come on at all, but the motherboard light will, only showing the breathing/flashing red lights like I had described.

Hey guys, I tried using new ram, which was Corsair vengeance 16 gb, 2666 MHz. However, this didn't end up solving my problem. My motherboard still has a breathing red type of effect. I'm not sure if it's a post status check code or not. None of the post status check lights come on to show me what is wrong with my motherboard. Is it possible that I have a faulty motherboard or shorted something on it?