While this reply may sound superficial, to start MacBook into Safe mode,
this could be of help to remedy symptoms, whatever the cause. Try it.
(Would require at least one login ~ and a long wait before it starts.)
• How to use Safe mode on your Mac - Apple Support
https://support.apple.com/en-us/HT201262
Within article are blue text links to additional detail not spelled out.
Pivotal items within above, include sections:
A. "If the issue continues in safe mode" (suggests link to reinstall macOS)
B. "If the issue doesn't continue in safe mode" (restart &/or options)
Good luck & happy computing!🌻🐝