It’s not as hard as you’d think. github.com/tycrek/degoogle - This has everything you need. Definitely use Firefox. Check out Nextcloud for personal cloud/documents replacement etc. Definitely try a small PC hooked to your TV and look in to plex. Don’t use Google/Bing, stick with DuckDuckGo and if you need to, use !g or !b in your searched on ddg to get bing and google results. It’s fun exploring all the alternatives in the list.