You didn't read the FAQ, specifically the section about logs:
viewtopic.php?f=21&t=90190Logs
DaVinci Resolve has a function to generate diagnostic logs that can be analysed to look for problems. It is important to get the logs from DaVinci Resolve, generated immediately after a crash. OS generated diagnostics and logs are of little use. Please post a link to these logs on the forum - this will often give others a chance to assist you. If you are unable to post a link, put a space in the path so the forum doesn't think its a link, eg. my logsarehere. com
You can grab logs by restarting DaVinci Resolve and choosing “Create Diagnostic Logs on Desktop” from the Help menu.
If you have automatic crash reporting enabled, adding your contact details and description would help us contact you if we need further details.
If you cannot launch DaVinci Resolve after a crash, please follow the steps below:
Mac OS:
In Finder, select "Go to Folder..." (⇧⌘G by default), type the path /Library/Application Support/Blackmagic Design/DaVinci Resolve/ and hit Enter. Run the CaptureLogs application.
Windows:
Go to C:/Program Files/Blackmagic Design/DaVinci Resolve/ and run CaptureLogs.bat application
Linux:
From the Applications menu, under DaVinci Resolve, select DaVinci Resolve Capture Logs
Note: Additional information - including the NFO file for Windows users and the SPX file for MacOS - is often useful. Please check the Posting on the forum section on how to obtain this information.