It really felt like the quintessential Rocky narrative, didn't it? The training scenes were uplifting, the fight itself was uplifting, and ultimately, the film’s strength lies with its characters—that's what truly elevates a story. However, Creed seemed somewhat lacking in development; he wasn't as fleshed out as one might have hoped. This is addressed later in Rocky II, III, and IV, but initially, he came across as an opponent without much substance, resembling Muhammad Ali but missing genuine depth. A bit more exploration of his character would’ve benefited the first film. Fortunately, that was something we saw explored further on. The most compelling aspect was the romantic storyline… I realize that might sound sentimental, right? …but they managed to portray it in a way that felt awkward and even intimidating at times, alongside being genuinely sweet and charming—and it all seemed very authentic and believable. It’s easy to see how these characters became attracted to one another; you get a real sense of who they are, and that carried over into Rocky II, though it faded somewhat in III. We only saw brief reminders of it until Balboa. Despite everything, it remains the low-budget film that captured our imaginations. It’s an inspiring story about someone overcoming long odds, and at their best, Rocky movies tap into that inspirational quality.

Source on TMDB