Apple no longer sells M2 or M3 MacBook Airs as part of their new product line. All current MacBook Airs use the M4 chip, and I would suggest that you consider one of those.
If you are determined to get a M2 MacBook Air, specifically, you could look in the Certified Refurbished section of the online Apple Store. There might be some there. Selection there changes frequently, and is catch-of-the-day.
Be aware that
- Many M2 MacBook Airs had only 8 GB of RAM. You cannot upgrade RAM after purchase, and I would suggest looking for a MacBook Air that has at least 16 GB.
- The M2 MacBook Air can only drive one external display.