>Can you reccomend me some (possibly user friendly) tool to avoid the big brother's eye?
It all boils down to determining what your personal threat model is. You need to decide:
1. What do I want to keep private?
2. Who do I want to keep it private from?
3. What tradeoffs am I willing to accept to enable this?
Everyone is going to have a different threat model. There's no magic one-size-fits-all solution.
In my case, I want to keep my personal info from falling into the hands of advertising companies, because I just plain hate advertising. This means using hardware, software, and online services that aren't connected to companies that profit from advertising. I'll use Linux on the desktop, LineageOS (a Google-free variant of Android) on my phone, and a paid email hosting service (Fastmail) that stays in business by subscription fees alone and doesn't have any connection to advertising companies. I am fully aware that none of these choices would defend my private data against truly determined targeted government snooping. For me, that's an acceptable trade-off to be able to own a modern laptop, a smartphone, and convenient email access from multiple devices.
For someone else, keeping data private from government snooping might be critical - think pro-democracy dissidents in countries like Saudi Arabia or China. For them, the same steps that I've taken would be totally inadequate. But it doesn't make either their choices or my choices objectively wrong. We just have different needs.
Don't worry about every theoretical privacy problem that could conceivably happen. That way lies tin-foil-hat log-cabin-hermit manifestos-on-typewriters madness. Just take some time to consider those three points above. After that, you'll be in a better position to ask techies about what can help you keep private what you want to keep private.