How do you come up with a tactic?

I’ve just finished my third season with Manchester United and it’s the first time I’ve played a FM game and it’s awesome.

But I feel like a kinda rushed. I let my staff do everything and I used a tactic from online and I feel like I want to get more involved.

I’m thinking about starting all over and taking my time this time. How do you guys create a tactic? How do you find talent? Etc.

I want to be able to do more things. Rather than just allow my club to do it.

Any advice would be awesome.