Yeah, steroids only act as an amplifier for what you're already doing. If you're not eating or training properly, you should not expect much gain from steroids.
Many people also mask poor diet and training with AAS and PEDs. When they hit a plateau, they blame the steroids and start taking more.
Bro, steroids make a massive difference, don't kid yourself on that. There was a study done a while ago where they put young men between 25-34 on various dosages of testosterone and had them NOT train at all for several months, though the diet was planned. Guys that used 300mg and 600mg gained muscle and strength/power, with the higher dosage having greater results to no surprise. If you were to take a copy of a new guy at the gym and have them do the same routine, but one was on the sauce and the other was natural, you'd see a night and day difference.
You might not remember who I'm talking about, but this internet sensation around 2010-2011 named Zyzz had a very ripped physique and clearly was a steroid user. The guy partied his ass off and regularly engaged in drugs and drinking, which eventually killed him lol.
A lot of the results you will see are honestly due to genetics, this goes for both using and not using steroids. I personally don't use steroids and see no reason to. You are shutting down your own hormonal production and very likely will have to rely on TRT for the rest of your life. You are also increasing your risk of cardiovascular events like a stroke or heart attack. I've even seen data showing this with those just using TRT dosages. I personally believe the TRT benefits being pushed is just a means for clinics to generate profit.