What @johnny said^^
Microsoft has a few security measures related to this the most widely used is called Microsoft safelink you can adjust your settings for a whole org or individual account in security settings.
However you’d require your users to do that so not ideal.
Rather Microsoft safelink doesn’t work with rich text formatted emails so if you format as rich text it likely won’t auto click.
I’d start there however, It may be one of their other security measures.
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