I had [suggested edits][1] to many questions and answers and my edits were genuine: those posts had formatting or grammar mistakes but many of my suggested edits got rejected. 

Since many posts had only one mistake (or more but less than 6 characters) and according to AU editing rules there should be edits at 6 places or more otherwise it doesn't allow to save the edits for a low rep user like me. Thus, I edit their question a little bit more (like replacing "ubuntu" with "Ubuntu" and `apt-get` with `sudo apt-get`) so as to make edited characters more than 6 but then my edits are being rejected. On the other hand some user with high rep doesn't have this limit (editing post at 6 or more places), thus their edits are directly visible. 

So how to edit such posts for a low rep user like me and if I edit them correct way, why are they being rejected?

  [1]: https://askubuntu.com/users/278703/faizan?tab=activity&sort=suggestions