Using classic Outlook for Windows in business environments
No, Every Thursday for the last two weeks I am getting bombarded with junk emails from 2:30pm est to 3:30pm est.
Over 1000 emails each time.
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Microsoft Support provides the following information for reporting Phishing or suspicious behavior:

I do not show that on my Outlook page when I have a phishing mail to report. Is it something I need to load? All I have is to put the message in Junk.
Using classic Outlook for Windows in business environments
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No, Every Thursday for the last two weeks I am getting bombarded with junk emails from 2:30pm est to 3:30pm est.
Over 1000 emails each time.
Hello David,
I am Adesoji, a consumer of Microsoft products like you and I am happy to help.
If I understand you correctly, the report junk option is not showing in the outlook.com ribbon for you to report phishing or junk emails.
Please check for the ‘delete group’ and you should find report there. Click on it and you will be able to perform the required actions. (see attachment)
I hope this helps.
Do let me know if you require further assistance.
Best Regards, Adesoji