Want.
quand tu veux means 'whenever you want' in French.
"Je ne veux" in French translates to "I don't want" in English.
I want
it means I want you in french
want to speak french
You can say "Je veux me battre avec toi" in French to mean "I want to fight you."
'je sais ce que tu veux dire' or more standard: 'je vois ce que tu veux dire'
Qu'est-ce que tu veux ? means "What do you want?".
Qu'est-ce-que tu veux dire ?
Je te veux mienne (a rather literary expression) means 'I want you to be mine' in French.
I want to be a lawyer in French is 'Je veux devenir avocat' or 'Je veux devenir huissier' or 'Je veux devenir notaire'.
I don't quite know what you mean. 'Quand tu veux' means 'when you want', which doesn't fit with the rest of the question.