In addition to what was already said - use Firefox instead of anything chromium-based - I think it’s equally important to stop using the services offered by big tech companies and not just try to keep using them on our terms. Google wants me to watch a ton of ads on YouTube? Fine, I’ll stop watching it. In fairness, on my smart TV, YouTube ads have been what I consider adequate, while Twitch can be a disaster. The alternatives already exist with Peertube and Owncast. Are they perfect yet? Far from it probably but there won’t be big improvements if nobody uses it.