Did my macbook fry 2 chargers?

It is hard to say without being able to physical examine the chargers and the laptop.

Common causes of problems include:

• Needing to unplug the charger from the electrical outlet to reset the charger's internal circuitry which can get into a weird state sometimes.
• Some metallic piece has gotten stuck in the magsafe port of the laptop preventing the charger from seating properly. Sometimes it may be an extremely small & thin piece of metal, or even a staple. It is easy to miss them if they are positioned so they are not easily noticed.
• Laptop has an internal hardware issue (DC-In Board, Logic Board, Battery)
• The MBAir has an I/O Board and I/O Flex Cable which many times will have a problem, or perhaps the cable has become loose. I also find liquid damage to many of them as well, usually just a small bit of corrosion...it is one of the common places to find liquid damage as it is next to the fan.

Liquid damage to the Logic Board can also easily cause these problems as well (just takes one drop at the right place). Probably 50% of the repairs we perform are due to liquid damage so I always have to consider the possibility.

Here is an Apple article for troubleshooting Magsafe charging issues:

If your MagSafe cable or power adapter isn't working - Apple Support

You can also try running the Apple Diagnostics to see if any hardware issues are detected.

A 2015 laptop is now considered "Vintage" by Apple, but Apple or an AASP can still examine it to let you know the problem and a repair estimate.

What you are calling a charger is properly called the power adaptor which steps down voltage from the wall outlet to your Mac. Your Mac has the charge controlling unit built into the computer . Since you've now burned out a couple of power adaptors I'd have a qualified electrician inspect your building's electrical system. Especially the circuit(s) your computer was plugged into.

Hi Snikkel12,

Based on what you've shared the best next step you can take is to have your Mac inspected and likely serviced. You can review service options in your region, and potential estimates, here: Mac Repair & Service - Apple Support

Take care!