All MECOOL M8S Pro+ users eyes forward and pay attention:
The majority of faulty eMMC Storage chips and boards seem to be stamped KLMAG1JENB - B041
If your box is exhibiting freezing and crashing it is going to be useless going forward. You have a box with faulty hardware.
Once the eMMC storage bootloader area fails then no more LibreELEC. Forget about even trying to fix it.
Follow these links and seek a refund from the seller if purchased from Geekbuying (click) or Gearbest (click)
This is the thread you should refer Geekbuying or Gearbest to when talking about Frozen M8S Pro+ boxes:
I would not even mention LibreELEC. These faulty boxes are dying simply by doing a regular OTA Android Firmware Update.
The more times you re-flash the worse the problem seems to get.