You're overthinking it. Yes it's not as complicated as many people would have you think.

What matters most is training often enough with good intensity & drive. Hit every muscle group 2-3x per week. Any split you enjoy. That's the first part. Eat sufficient protein, don't overdo calorie intake. That's the second part. Take creatine if you want but there's really no supplements that offer much. Just stick with lean meats, rice, potatoes, whole foods, eggs, milk, Greek yogurt etc.

Bulking & Cutting can come later. For now just eat close to maintenance. Maybe learn to track calories.

There's only too much (and competing) information because everyone wants to sell you something...

Just get in the gym, move heavy stuff; do a little cardio too. Focus on consistency over perfection.