If you need to learn a new language fluently, you need a reg. professional course / tutor or school. Or online resources, but the bottom line is you’ll have to pay a lot.
For basics, or to pass an elementary level foreign language class in college, there are many affordable or even free places to access the necessary tools. Try the public library, or google.
As I said in a previous post, the most effective and cheapest way i.m.o. to learn any new language, is by being among people who speak it. If you have the option visit a country where this is their first language.
Good Luck.