Well, the battery is well used with 383 cycles, but cycles alone is not the only measure, age also comes to play and looking at the design capacity it’s getting close to the end of offering much time on battery alone.
I would recalibrate the battery to see if that helped, otherwise it’s time of a new battery.
Reference: [https://www.makeuseof.com/tag/calibrate-maintain-macbook-battery-best-performance/|Calibrate & Maintain Your MacBook Battery For Best Performance]