For me, Duolingo plus middle school and highschool spanish has helped me tremendously. It does get repetitive and daunting at points but that's honestly a good thing as it reinforces and reminds you of certain things you may forget or get wrong.
The gamification of it actually helped me push harder than i would have thought being competitive for the weekly rankings as well as with my ADHD.
Of course I'm still not amazing at spanish but I can hold a very simple conversation, follow along with conversations people are speaking and pick up on context, speak to spanish speakers where they compliment it and say it's perfect, and I can read it and write it very well.
It could very well just be me and my dedication to it but with a 61 day streak and at minimum of 15 minutes a day while using a journal to write down any and everything I can and practicing Spanish at work, while watching spanish cartoons, I would say Duolingo has been absolutely worth it for me
I have generalized anxiety disorder and adhd. I wish i could control my anxiety and impulsive thoughts completely