Ask HN: How do you keep your data private?

I feel a bit paranoid now with the services I use. It seems like everyone is trying to harvest everything I do for AI training. For example, if I start using Notion, are they going to use everything to train some AI of theirs? I'm assuming Figma is training on what people create. It seems like Microsoft is going to be training on everything done using Recall.

It really shouldn't be so easy as burying an agreement in the terms somewhere to gain ownership over your data, but that's the way it is now. Where do we go from here? How do we use computers connected to the web while still maintaining privacy?