Leopards never change their spots
Aka you can't teach an old dog new tricks. I don't know if I'm a dog or a leopard but it sure seems to apply to me.
I've always been averse to writing things down and even more averse to formal grammar lessons. I've always relied on my memory to absorb the patterns in a language (call it implicit grammar). This was so over four decades ago in high school and it hasn't changed a bit even now.
I use various apps for self practice and have noted that I love the speaking exercises, fill in the blanks and comprehension exercises as much as I hate writing (typing) and formal grammar reviews. What, I ask myself, will I do with uncountable quantifiers, prepositions and irregular verb stems? I should speak and write without error, that's all!
I'm not saying that my way is any better than anyone else's, or indeed, will even work at all for someone else. What I am saying is that we all have our preferred ways of learning and nothing (including the passage of time) normally changes that.
Do you also stick to your individual style or have you changed that over time?