How can I maximize my muscle and strength gains from working out?

So, I have been working out my muscles lately, and I have noticed that I am seeing VERY little muscle definition. It’s been about 3 months now. I have seen some definition in my upper abs, but that is pretty much it. No thighs, calves, arms, etc and I have been working those out too.

I thought maybe I am not eating enough protein, so I just started being conscious of the amount of protein I am taking. Do I need to eat protein every day, or just right after the work out?

Maybe I also being too impatient, not sure?

What can I do?