Did i not tell you to NOT DO ANY OF THIS??? seriously none of the things you did actually fixed the issue, you did this for nothing…
The crash you saw is a RANDOM crash, it sometimes crashes sometimes it does not, you have wasted your time and your progress on a crash that only happens specifically by chance…
If this happens again, just try loading the world again and again until it works, do not try to fix it, just try to open it again, seriously that is how to fix it, your loading a backup thing only wasted your time and the progress you had made.