You can still use Microsoft word web version after your 365 expires. The mobile app has ads if you don’t have a subscription.

Why would you want an immutable desktop?

Racism is not easy to understand and you’re definitely not going to get a clear understanding of it from reading a definition especially if you’re white. I suggest you read some books. Good heavens maybe your racist Chinese friend is right.

Edit I hear this is a good book

White fragility by Robin diangelo