https://geti2p.net/en/

I2P is worth a look. I personally use this and like it. Definitely spread the word, so the network can get larger.

For casual web browsing you can use:

https://duckduckgo.com/
https://www.startpage.com/

You can also use TOR (but you should do your own research and learn how to use it):
https://www.torproject.org/download/download-easy.html.en

On a mobile device, I would advise to use Orbot Proxy in conjunction with Orfox.

Orbot:
https://play.google.com/store/apps/details?id=org.torproject.android

Orfox:
https://play.google.com/store/apps/details?id=info.guardianproject.orfox