Jesus Christ. Again, specific people's with common genetics may have advantages in specific athletic activities.
First of all football isn't one of those specific activities. There's lots of ways to be a good footballer.
"Black people" as you are using it is a term that has no scientific validity. Nor is there any common genetics shared between people identified socially in that way.
It's you who is making a very broad point that's indefensible, and is meandering from that point into narrower claims.
I have no issue with the idea that certain peoples might have specific athletic advantages, that seems clear. There is no mechanism or reason that this would be attributable to one superficial, social construct of race. Again it's like saying that whites are clearly stronger than blacks because the world's strongest men are generally Nordic, and that the addition of some nuance to that means you're PC. No, it means you are approaching a scientific question with the most muddy, general terms.