Nosheen if you are in Lahore, Karachi or Islamabad you can join the French Cultural Centre (Alliance Francaise (AF)). They have a whole range of learning levels even for kids. However my experience of taking French classes at the AF tells me that a good experience of learning the French language is dependent on the quality of students, almost entirely. Avoid classes that have people who are looking to pass time (and thus waste yours), those wanting to be able to produce a certificate to earn some points for immigration to Canada, bored aunties and uncles etc etc or the hilarious weirdos who think that they can start dating an expat (beautiful French woman) at the AF yes its true.
I love the French language and I am a self-learner for now but my experience of taking a few months crash course was totally ruined due to the bad student mix. I look forward to connect with people, both locals and expats, with whom I can practice my French language here in Islamabad.
Wish you all the best! Make your selection of class wisely. Cheers.