What is the procedure to change my MacBook Air M3?

If you want satisfaction you'll have to be persistent.

Each time you discover a problem or a recurrence of an issue, make it a point to notify Apple, either through online help or directly at theGenius bar. It might help to make Genius Bar appointments so that there is a record of your continued contact. If you call Apple Support, make sure you elevate to a level above that of the person who is your first contact. If Apple cannot eliminate a problem then this is one way to document that your issue is beyond repair and may give you some leverage as a consumer if the only fix is a replacement of a defective device.

Be persistent, but also be respectful. You'll have to be your own advocate in this.

You can make a Genius Bar appointment for hardware/software service and support using this link: Contact Apple for support and service - Apple Support

Get your Mac repaired and see how much will it cost: Mac Repair & Service - Apple Support 

Call Customer Support (800) MY–APPLE (800–692–7753) or on line /getsupport.apple.com/ 

or call AppleCare Support at 1-800-APLCARE (800-275-2273) 

Outside the USA—Contact Apple for support and service by phone see a list of Apple phone numbers around the world. Contact Apple for support and service - Apple Support 

What do you mean by "change my device"?

Apple introduced M3 MacBook Airs in March 2024, so if you bought your M3 MacBook Air from Apple or an Apple Authorized Reseller, it still should be covered by Apple's one-year warranty. However, if. you take in it for warranty repairs, it's probably up to them as to how to fix it.