If you was training for size/aesthetics/genetic potential and you wasn't meeting your goals, providing you was putting in the work, and I've no reason to believe you wasn't. Almost certainly the reason why you didn't get there was because you wasn't eating enough. I can't stress that enough. You have to eat an absolutely insane amount of food to gain a significant amount of mass. My walking around weight is roughly 67kg, years ago, when I was really into it, I got up to 82kg, that took me about 3 years. The reason I stopped going the gym wasn't because I wasn't enjoying it, it was the staggering amount of food involved, it seemed like I was eating all day, every day. I've recently started going again, about 8 weeks ago and I'm enjoying it but I'm already fed up with the amount of food I'm having to eat😂.