Unexpected shutdown on MacBook

Hello,

I am having unexpected crashes for over 2 months with my Macbook 12 inch early 2015 model. I am really dissatisfied with this issue and tried to find many solutions. I tried plugging in overnight and resetting SMC NVRAM. Nothing changes the situation right now. At first I was convinced that this was the issue of overheating but I have now experienced that this is happening randomly. I researched the forums and found out that the issue may be kernel panic. I also tried to check if there is an issue in hardware by making a hardware test. I had no issues found result. The only thing I haven’t tried yet is to reinstall the MacOS. And yesterday When I clicked on the power icon on top right and saw check the battery allert there. I just want to know if this random shutdowns are happening because of the battery issues or am I having a much more terrible issue.

Due to the covid19 outbreak our local Apple Genius stores are shut down and if I am to confess I have no trust our local apple Certlfled resellers since I heard they were changing some screens with the used ones.

are there many others which are having this issue just like me? What is causing the problem in my laptop?