Before I buy

[Void]

I regret. It was not to be rude.
I will probably not do that in the future.

But I do not think that any of my questions were answered.
So I'll just try again.

What is the safest to use?
GTA 5 cheat or FiveM?

How long has your GTA 5 and FiveM been undetected?
The same with RDR2?

Can your aimbot in battlefield 5, work in tank and plane.?

GTA 5 and FiveM is 2 different game versions, it is not like 2 cheat versions like you think.
I'll recommend to google "FiveM" phrase and read more about what it is.
In regards of "safest", both are same secured, FiveM was detected last time many months ago as far as I remember.
RDR2, never been detected, as far as I remember.
Aimbot in BF5 working fine, however, it does not have predictions for planes, tanks so it will work only on close range.