If you want to dive deeper then there is Tails: https://tails.boum.org/ - an OS which is designed with privacy in mind.
https://prism-break.org/en/ has a lots of links to various tools be they operating systems, messengers, browsers etc.
None of these tools are a silver bullet - most require some level of effort or perseverance to use and none of them will protect you against every attack imaginable. However, they will make it more expensive for an adversary to target you.
If you want to dive deeper then there is Tails: https://tails.boum.org/ - an OS which is designed with privacy in mind.
https://prism-break.org/en/ has a lots of links to various tools be they operating systems, messengers, browsers etc.
None of these tools are a silver bullet - most require some level of effort or perseverance to use and none of them will protect you against every attack imaginable. However, they will make it more expensive for an adversary to target you.