You don't need Excel. Have not used it in over 10 years.
Teams, that application IT is forcing me to use because they are a "Microsoft" house. Same application currently stating I'm on the _Calendar_ screen on the Task bar but actually in the _Chat_ screen; _Calendar_ bloatware feature and others have been removed and will always. Even when _Microsoft_ screws the user and force a reinstall of features after a Teams update.
Microsoft is a trillion dollar company that rejects quality user experience, QA, and is great at producing crap-ware. There is not a single product sell that I will spend a penny on. Still waiting on that 7+ year request to destroy | delete dangling pull request in Azure.