Coin cell holder not powering circuit

Question

I use a 3023 Keystone electronics, through-hole coin cell holder in my circuit. When I connect the Arduino to my computer, it gets powered up without any issue and my circuit works just fine.

The problem is that when I disconnect it and try to place batteries in my coin cell holder, it does not work, the Arduino's lamp doesn't blink and my circuit doesn't work. The circuit has two load cells, a load cell amplifier, an Arduino, and a coin cell holder.

I don't know if I have to but I thought I heard I had to make different types of wiring on the board for power lines? If not, could it be because I soldered it in the wrong direction?

I tried multiple different batteries but that doesn't seem to be the problem either. I use two 2032 Philips cells in my holder which should give 6 V, the required voltage for the Arduino (33 IoT) to work.

This is the schematic of my circuit:

This is the board:

This is the actual board:

Answer 1

The Arduino® Nano 33 IoT apparently (the present official datasheet is not informative) draws current of 40-50mA.

A CR2032 cannot supply that much current, even briefly, and maintain output voltage. A stack of AA batteries would be better, and you'd probably want to activate whatever power-down features it has to minimized current draw when it's not necessary.

One indication that this Arduino is not a particularly low-power device is their choice of a switching supply rather than the linear regulator used in the basic ATmega-based nano.