I'm sorry to hear that your MacBook Air isn't starting. Here are a few things you can try:
First, make sure your charger and cable are properly connected and working. If you have another charger or cable, try using that to see if it makes a difference.
Next, try a force restart. Hold down the power button for about 10 seconds. Sometimes this can help get it going again.
For MacBooks with M1 chips, there's no separate SMC reset, but you can try this: plug in the power adapter, hold down the power button for about 10 seconds, then release it, wait a few seconds, and press the power button again to turn it on.
You can also try starting in Safe Mode. Turn on your MacBook and immediately hold down the Shift key. Let go of the Shift key when you see the login window. This can sometimes fix startup problems.
If you have any external devices like USB drives or printers connected, disconnect them and try starting your MacBook again.
If none of these steps work, it’s a good idea to contact Apple Support or visit an Apple Store for help.
I hope this helps and you can get your MacBook Air working again soon.