I found your a School where you only learn french during one year.
And after that it's possible to start a university cross or other.
You can have a look on internet.
The name of The School is France Langese.
The site is also In english.
When they will confirm that there is a place for you In The School, they will send you a scolarity paper.
Did you already go to The ambassade of France?
Have you The list of all you have to do for having a student visa for more THAN 3 Month to go In France?
( it's very important to précise MORE THAN 3 MONTH)