When it comes to muscle growth don't waste your money on supplements until you have your training and nutrition together. Supplementation needs to be last,waaaaaay last. Most products don't have any real science to back up what they say they will do for you anyway. There are two things you need to focus on before you even think about purchasing a supplement. The first is PROGRESSIVE OVERLOAD - It doesn't matter if you're doing 5x5/Pyramid or any of the other training style, if it provides progressive overload it will work. For continued muscle growth, the body must be forced to make new adaptations.
The second is nutrition. Your nutrition has to support your training. Getting enough calories and protein are key to gaining muscle. If you’re focusing on other details before these basic requirements are met, you’re wasting your time and causing unnecessary stress to yourself. Stress is not helpful in your quest for GAINS bruh. 💪