"Comment tu vas?" means "How are you?"
It means "that" like saying Ca-va? But in that expression, it is more of a phrase.
"C'mon, Gabon!" is an English equivalent of the French phrase Va, Gabon! The exclamatory phrase may be heard at athletic competitions and sports events. The pronunciation will be "va ga-bo" in French.
The French phrase for "how's it going?" is "Comment ça va?"
Comment ça va? in French means "How are you?" in English.
"Comme estai" is not a recognized phrase in French. It is possible that you meant "comment ça va?" which is a common French greeting meaning "how are you?"
"On va voir" is French for "we'll see." It is a phrase used to indicate uncertainty or that a decision will be made in the future based on circumstances.
"Go again!" is a literal English equivalent of the French phrase Va encore! The pronunciation of the present imperative in the second person informal singular will be "va kore" in northerly French and "va aw-kor" in southerly French.
Comment ça va ? : how are you?
ça va means 'it's OK' or 'I'm fine' in French.
"Go to... ." is a literal English equivalent of the incomplete French phrase Va Ã?... . The incomplete statement is in the second person singular of the present imperative and therefore may be considered addressed to a family member, friend, or peer. The pronunciation will be "va" in northerly French and "va a" in southerly French.
"It isn't going well!" is an English equivalent of the French phrase Ça ne va pas! The declaration translates literally as "That doesn't go!" in English. The pronunciation will be "san va pa" in northerly French and "sa nuh va pas" in southerly French.
"What are we going to do?" is an English equivalent of the French phrase Qu'est-ce qu'on va faire? The question translates literally as "What is this that one is going to do?" in English. The pronunciation will be "keh-sko va fer" in French.