1xbet? I dunno. They have a lot of money and resources which is why they could have sponsored someone as big as Messi to be honest. They are a shady organization who continue to thrive in the gambling world.
They are just everywhere. At one point they even had a
partnership with Barcelona and you would see the digital display banners advertising them.
I also saw them having a partnership of sorts with Seria A. I am not sure if the partnership is still on. They did try to get to the Premier League too but failed