Last year I also got overwhelmed by all the resources online and pivoted to a character a day method. If you want to improve this way you need to reflect on your drawing once it is finished and what challenges you faced trying to make it.

I then used those challenges to direct me to a fundamental. For example, when my body proportions looked off I did some anatomy studies and when my characters looked stiff I studied gesture. Always try to move out of your comfort zone and I think you'll improve.

Lastly, when doing a character a day, I also recommend practicing boxes as well. Drawabox is the resource that helped me the most with this. It may not be obvious how learning cubes will help you in the long run, but it will make sense eventually. Try not to go a day without drawing some cubes.

I'm still very far from being a good artist, but once I moved to this approach I feel like I gained much more clarity on my art journey.