The volume of content in your target language available on youtube alone is enough to last you a lifetime. Not to mention all the channels specifically catered to teaching the language. Then the online tutoring marketplaces - you can be directly connected to a tutor from a country that speaks your language natively and remotely schedule 1:1 lessons at your convenience via video conferencing software. Plus the availability of language partner sites to practice if you're on a budget.
The biggest problem in my opinion is people struggling with self directed learning, more than anything. A college level course is likely going to be objectively worse than self directed study with targeted goals, but many people dont have a clear goal of what they're trying to achieve in their target language other than a vague sense of fluency, myself included. If your language goal is to become fluent in a language, that's a goal with no defined end in sight.