OP's story about his gambling journey could either be really his or he just photo grabbed it in social media, however, we can't also prove it whether it's true or not, we can just give our opinions and appreciation of him sharing such story. I mean, it's possible to win such amount in gambling, especially if OP is a heavy gambler, a lot of money and a full time sport betting gambler.
If it was me and the screenshots aren't mine, I wouldn't even waste my time posting it here just to get some attentions, unless it is really my achievements.
Even if that is my achievement, I will not easily share that in public but maybe I will only share to my closest friends that I believe they will not tell others. But suppose that is about getting amazed by them because of my big winning. In that case, that will depend on each people because some people are proud to share their big winning and that is not wrong to tell the public about the big wins.
It is hard to confirm whether that is right or wrong, fake or real. When that is available on the internet, anything can happen unless someone closest to us can clarify that. We can agree that @OP gets a big win from gambling.
from building reputation to making connections... maybe?
here is a good place to find like-minded people in terms of gambling.