Thank you. Please do the following:
Open Finder, and move the following items from the open Library folder to the Desktop (some may not exist, but if they are there move them):
Here, "*" stands for a long string of letters, numbers, and dashes.
Note 1: You are not moving the Safari application. You’re moving a folder named “Safari.”
Note 2: This step will remove your Safari extensions, if any, and their settings. If you choose to reinstall them, do so one at a time, testing each time to make sure you haven’t restored the problem.
Try again. Your settings and bookmarks will be lost. The default set of bookmarks will be restored. Delete them all.
If Safari is now working normally (apart from the lost settings), look inside the “Safari” folder on the Desktop for a file named “Bookmarks.plist”. Select
File ▹ Import Bookmarks...
from the Safari menu bar. Import from that file. Recreate the rest of your Safari settings. You can then delete the items you moved to the Desktop.
If the issue is still not resolved, quit Safari again and put all the items you moved to the Desktop back where they were, overwriting the newer ones that may have been created in their place. You don’t need to replace the files you deleted earlier. Let me know the results please.