If you're new to cheating you should probably read this -
https://forum.aimjunkies.com/f596/
There is ALWAYS going to be a risk of being banned, there is NEVER going to be a cheat that will be 100% safe. While the cheat itself is undetected, you have to do your part too and use it wisely. Most people who get banned are being really obvious. Doing things that a normal or above average player cannot do. Rage hacking and not even knowing they are doing it.
When you're using cheats, any cheats (or exploits) I play as if someone is watching me and also ask myself if I played against someone like me, would I suspect they were cheating....