I guess I've said something similar in some other thread before. it doesn't matter if it's sport betting or gambling in general, they all are lucky based. Skill comes in play when you have a lot of experience with gambling or betting to be precise. That way, you know how to properly arrange your odds to favor you and know which team to bet on or not. Even after all that, you might still have to hope that you are lucky so your games all comes out as predicted. Just one game can ruin your bet. So it's all luck not skill.
Specific games require skills and not only luck but you're right that if dive down to gambling in general, we'd end up about how being lucky we are just to get into these wins.
The odds, the chances, we're all hoping for them to get into but we have to do our work in doing the research. And that's part of the skills and that's why, it's still gonna need some job to do before we rely on luck.
Anyway, if you say so that it's all luck and not skill, you are not wrong with that and if someone says it's the opposite, the same thing not wrong too.