Earlier quoted context omitted.
Just starting my second paid year - I didn't put up with the adverts for long. Works far better for me without the hearts. Less time staring at sentences trying to make them perfect - more quick failing, learning why, iterating and drilling it into my head. Also much more likely to spend longer in the app, maybe a couple of times a week.
After a few months of Duolingo you should move onto comprehensible input for learning. Your Duolingo subscription is holding you back
I do occasionally get through some french youtube with subs and I'm getting better at roughly following - I'm not just relying on Duo. (I also have a grammar book to hand as well)