A bit over a year ago, I was a completely monolingual English speaker with zero experience with the French language. Twelve months later, I very comfortably passed the internationally recognized DELF B2 exam. If you don’t know what “B2” means, check out the CEFR scale.
http://www.runwes.com/2020/02/11/howilearnedfrench.html
origin - https://www.pipiscrew.com/2020/02/how-i-learned-french-in-12-months/ how-i-learned-french-in-12-months