как грамотней? и в чем разница? waiting for you и waiting you

Правильный вариант - waiting for you.

We use wait for + someone/something:
I was waiting for the train in the rain this morning.
Can you wait for me? I’ll be ready in five minutes.
Jack said he is still waiting for the package from his sister.
We also use wait for + someone/something + to verb
I was waiting for the train to arrive.
Can you wait for me to go out? I’ll be ready soon.
Jack is waiting for the package to be delivered.
We use wait + time without a preposition after wait.
I waited ten minutes for the train.
Can you wait five minutes?
Jack waited all day, but the package didn’t arrive.
Lastly, we use wait + to verb
I waited to hear the results of the exam.
You have to wait to eat the soup because it’s hot.
I’ve waited to buy a new watch because I am saving the money to buy it.

В английском языке глагол to wait требует предлога for для существительных и to для глаголов. Никак иначе.

waiting for you правильно

Правильный вариант - waiting for you. В выражениях - ждать кого-то или что-то, глагол wait употребляется с for. Я жду тебя - I wait for you; я жду его звонка - I wait for his call.

зависит от предложения в котором ты употребляешь это)) но можно сказать и так, и так) разницы большой нет. но если с for you,то нужно wait for you употреблять. но опять же зависит от контекста