A few things to keep in mind if you're unfamiliar with OP. The fights aren't as flashy as Naruto, but a ton of them have a lot of emotional buildup that a quick clip won't show. One thing I've loved about it is Luffy is nowhere near the strongest character at first. You know how in a lot of shonen, the MC will win a fight just because he's the MC or with the power of friendship? In OP, the MC's get their asses kicked quite often.
In fact, one of the biggest changes in the series comes after an overwhelming defeat. Sometimes they literally have to run because their opponent outclasses them that hard. There's people in verse you just don't fukk with like admirals. Until you get to them, you think the MC's can beat anybody. Further in, there's a situation where people warn Luffy not to fukk with this specific person as he's basically deemed above the law. Well, you can imagine what ends up happening. But he's the MC and the power of friendship will overcome right?
Right?