MS Outlook app on Apple Watch SE

I have an Apple Watch SE (A2355) and the MS Outlook app cannot be installed on it anymore. It was an excellent way to access my work calendar on the go. The reason is that the OS version is 10.6 but 11 is needed. Is there a workaround or a fix for this? Note that I can't use Apple Calendar because my employer has disabled the Outlook calendar sharing function for security reasons.