Miscellaneous

Perhaps, you can delete the mail profile and the .ost file in your %appdata% to have the PC recreate it.

It helps if you provide details of your troubleshooting completed and the results.

You can start your Outlook offline by disabling the internet connection

Hi you can try opening the Outlook in safe mode. If in same mode Outlook works fine then your add-ins are causing you this problem. try disabling the add-ins and check if it works. you can refer to this guide for more detailed information: https://www.tipsoverflow.com/outlook-does-not-start-crashes-freezes-or-is-not-responding/

You should try to use Outlook in safe mode. There is also chances of Outlook profile corruption. You need to fix this profile damage to resolve the Outlook profile stuck issue.