I've recently come accross few narrations regarding apostacy and I started experience a bad feeling, worrying if my religion (God forbid) was somehow unjust. We have plenty saying that the one who belies his shahada should be killed.
My question is as follow : Why is it so ? In general are the apostates who genuinely leave Islam (in a islamic state with a maasoum or a just faqih) without betraying the community to be killed ?

Wslm
Hope and pray you are well and keeping safe.
Kindly check this document for more information:

https://www.al-islam.org/articles/thoughts-apostasy-islam-mahdi-azizan