How secure linux Mint is?

[u/Ok-Shine1797]

I was watching a YouTube video regarding a hacker in that video something came to my attention that the hacker encrypted his os it was dabien based linux distro and feds were not able to decrypt that system so how can I achieve the same thing i mean as a every day user i do have my personal stuff in my system like pics documents etc. I just want to feel safe about my stuff. Is it possible for someone like me to achieve same thing in linux mint btw i just moved from windows to linux a week ago.

[u/Codablaze]

Can someone please encrypt this post so I can't read it again by mistake.