No, it is not. It would be either most sweet, or sweetest.
No, "most friendly" is not grammatically correct. The correct form would be "friendliest" when comparing three or more things.
Yes, the sentence "He is their most targeted receiver" is grammatically correct. It means that he is the receiver who gets the most passes thrown to him by his team.
No. It is my favorite place is the correct spelling. Most is implied in favorite.
"Not like that" can be grammatically correct, depending on the context.
The phrase "Is you don't miss me do you" is not grammatically correct. It should be rephrased to something like "Don't you miss me?" to be correct.
Yes! That is grammatically correct!
Yes, 'for free', is grammatically correct.
The phrase "You are not knowing" is not grammatically correct. Instead, you can use "You do not know" or "You are not aware."
"That was wrong" is a grammatically correct sentence.
Yes, it is grammatically correct.
Yes, Almighty God is grammatically correct.
The sentence "Rhoda's Crazy" is not grammatically correct. It is missing a verb to make a complete sentence.