1000% having a coach is worth it.
Like 165 said, if you’re just a gym rat running gear - buy BYOBBC from Scott Stevenson and you can figure it out, kinda. Chances are you won’t have an elite physique, but you’ll look good. I did this for years. Most do.
Get a coach if you wanna take your physique to the next level. This is mostly nutrition too. Lifting is meh, we all know how to train but having someone to tell you, “no, you’re not fat yet” or “you’re flat, it’s fine, keep dieting”
is absolutely necessary. You willll over tbink stuff, that’s a fact. And a good coach takes the thinking out of your hands. You WILL look better.