The only significant and obvious thing to take is creatin.
Lots of esoteric believe in the strength/ gym sport.
No you do not need to eat rice and chicken and broccoli every single day for gains just because a steroids taking gym bro does it.
Go to the gym 2-3 times a week, do enough weight that you can't repeat the exercise after 5-15 reps and do 3 sets min.
Magic
I don't know what that means. The amount of protein people get varies dramatically. Chicken is a remarkably efficient way to get protein. Greek yogurt is also pretty good.
If you haven't measured your protein intake (with an app like myfitnesspal) you should try it.
I always thought I was a pretty knowledgable person when it came to nutrition and my eating habits competely changed when I bothered to look up the calorie and macro count of everything I ate. I also dropped 40 pounds and put on a lot of muscle.
But geeze these protein shake/dietary websites are the most dark pattern sites. countdown clocks, hurry only 3 items left and one disappears while you are looking at it, sneaky monthly addons, extra fee at the end. Look I just want to buy a bucket of whatever protein garbage you are selling that will last 2 months. That they have extra junk in them that should not be there, is unsurprising.
The diet at home was "good enough" - because every unchecked diet is "good enough", regardless of composition. That's what everyone says about their diet.
Turns out diet is 60% of gym gains. I'm saying this with no steroids at all.