MacBook is not charging
The battery finished and the laptop is not charging
[Re-Titled by Moderator]
MacBook
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Take a look here https://support.apple.com/en-us/HT204267
Of course, steps 1 and 2 are just too obvious, but step 3 is important because of SMC reset https://support.apple.com/en-us/HT201295.
Also reset NVRAM https://support.apple.com/en-us/HT204063
If it doesn't come back, get an appointment in an Apple Store or Authorized Service Provider for a proper diagnose.
And also take a look at those links, they might give you some helpful information
https://www.apple.com/batteries/maximizing-performance/
https://support.apple.com/en-us/HT204054