not charging when pluged

macOS is trying to extend the battery life by reducing number fully charged battery circles.

Check this article:

If battery charging is paused or on hold on your Mac - Apple Support

You should be able to resume charging the battery by clicking on "Charge to Full Now" in the battery status menu.

Do you have an Intel or Apple processor MacBook Air?

About battery health management in Mac notebooks - Apple Support

If your Mac battery status is “Not Charging” - Apple Support

If your USB-C power adapter isn't charging your Mac notebook - Apple Support

Is "Optimized Charging" enabled in the settings?

Get help with your Mac notebook battery - Apple Support