Hello! Which tablet did you buy? A regular pen tablet or a screen display tablet? Both have their pros and cons and it will definitely take time to feel comfortable with it!
I’m an anime style enthusiast myself, here’s my selection of excellent channels (with English subtitles):
- hide channel【顔と体の描き方講座】
- Minimaru Comic
- Naoki Saito illust Channel
- Yaki Mayuru drawing channel
- 떡콩 DDUCK KONG
As far as I can tell, people who draw anime most consistently are often animators. They have great understanding of body proportions (they call it balance) and perspective, 3D form, gesture drawing, action lines, and a sense of movement. People who excel at shading are illustrators, for that there are some jaw-dropping resources in pixiv.net, especially for body shots of cute waifus in suggestive poses.