ZXCVB Keys Not Working Wireless Keyboard

It's possible the keyboard has failed. You can try resetting NVRAM and/or the SMC.

Reset NVRAM or PRAM on your Mac - Apple Support

How to reset the System Management Controller (SMC) on your Mac - Apple Support

Try another keyboard or try your keyboard with another Mac. Your keyboard may be damaged and need replacing.

You can also replace it with a Logitech or aftermarket keyboard.

For examples, see > https://www.imore.com/best-alternatives-apples-magic-keyboard

and/or check some out at > https://www.bestbuy.com/site/shop/bluetooth-keyboards-for-mac

Did you try just turning off the keyboard's power switch for a minute?