Self-teaching help needed
I've been (inconsistently) teaching myself since 2023 by watching song tutorials online. Last year, I could play songs like Left-Hander by Panic and Your Shampoo Scent In The Flowers by Jang Beom-june on acoustic. Then I started playing electric guitar as well, but I feel like I can barely do anything. The only thing I can play is Be Quiet And Drive by Deftones and it really doesn't sound that good.
If it matters, I'm into metal and I want to play songs by bands like Slipknot, All That Remains, Avenged Sevenfold, The Curse Within etc.
I honestly don't know what I'm missing. I feel like I just lack all the basic knowledge I need for all this, even though I looked through some basic theory stuff way back. What am I doing wrong and how can I improve?