What happens after you loose your frontal lobe

SO sorry if there is anything wrong in here! Please correct me. This will be taken from google, just because I wanted to know. Actually I never found anything about loosing the lobe completely, but it says something about damage of it.
you can check this guy out, he kinda lost his frontal lobe: en.wikipedia.org/wiki/Phineas_…

So, in FNAF it's stated that the child from the bite of 87 lost its frontal lobe. As I am from germany, I'll try my best to translate this to you guys

The centre in your brain where your frontal lobe is located makes you control your acts. It's for approval. You need it to approve, analyse and watch the processes in your brain. When you make decisions or calculate things you need your frontal lobe to approve it. Losing one's frontal lobe doesn't mean you go all derpy (sorry if this is offensive) because you don't need to have extreme intelligence loss.

What you can't do properly after loosing your frontal lobe:

The english article said, that you loose your natrual behavior of deciding between good and bad.

- analyzing problems
-creating ideas, you won't be creative anymore.
- No more oral fluency, you won't talk that much
- you will cling to irrelevant details
- You won't be able to stick to rules, you will break them more easily
- No systematic search for mistakes
- no alternatives (you'll be thinking very grey)
- disturbed multitasking!
- Rarely foreseeing of things
-no thoughtful and rather impulsive actions
- no huge willpower, you will often tend to give things up
- Your knowledge can't be translated into plausible actions

Makes it pretty hard to be a night guard, though xD

What you may be like after loosing your frontal lobe:

- Tend to get depressive
- no coordination
- halluzinationations (!)
- concentration will be fractured
- you'll be more childlike, more vulgar
- being paranoid
- being sleepless
- hyperactive/ or the opposite of it
- weightloss, having no drive for doing things.