I have one question and here it is, Why do they say not to use a ATK and what does it do to your phone ?
ATK is like a drug. The more that you use it, the more that you need to. Plus probably half of them lie by not distinguishing between app size in ram and app size in cache.
Android separates your apps and the operating system services they require into 6 categories.
Each category has a separate memory setting that works like this - if the ram free is now below this setting, perform memory management including auto-kill here.
It's a sophisticated algorithm using advanced techniques. Its database is being constantly updated. It's constantly trading resources to give the best overall average performance. It's one of the three cornerstones that makes Android, Android.
An ATK basically says that Android isn't Android and it doesn't know what it's doing, here, I'll do it.
At that point Android gets confused and begins fighting with the ATK. So far as Android is concerned, you didn't kill something and neither did it, so it'll often respond and restart whatever was killed.
In extreme cases, which are the ones we see a LOT, the battle between the ATK and Android is taking more battery resources than the apps being killed ever did.
Better approach, get Gsam Battery Monitor, find where your power is really going and manage rogue apps with reinstall or replacement, manage your configuration like a normal user, and if you have bloatware, don't go after it with an ATK, just root and remove it.
I don't run an ATK of any kind. I don't baby anything at all. But following the above advice, I get from 6 to 8 hours of screen on time per charge and my phone is fast and fluid.