I’m a year or so longer on my self-hosting journey than you, but also get humbled like a noob on a regular basis. I was a Linux user for over a decade when I first started self-hosting but I knew nothing about networking because I always lived places where someone else managed the internet. I’ve learned a lot since then, but I have a lot left to learn. It really does take time to get a comprehensive understanding of what you are doing and why, but the good news is you can learn a lot through osmosis and we are already doing it just by being here.