Prigo pretty much screwed Wagner. Gathers his 25k troops and reaches the outskirts of Moscow before basically quitting and running off to Belarus and giving up all of their heavy weaponry in exchange for passage to Belarus.
The way I figure it, Wagner was stymied on the front lines and they knew Russia intended to absorb them into their armed forces on July 1, so Prigo knew they were in a bad way and decided he wasn't gonna be Putin's lackey.
People saying Wagner will still be intact in Belarus need to keep in mind they've been stripped of their heavy assets and they won't be the threat they were, at least not for a while. I wouldn't be too worried about them trying to take Kyiv. They don't have the manpower or weaponry they need to pull that off. I guess with Belarus backing them, maybe, but I'm not so sure.