I don't know why but i mostly lose on provably fair, when start betting then some times the graph stay green, after betting some more bets it become red and go straight down, draining my balance.
That's what you called your
"own scenario". You end up at the point where you discover a certain pattern or situation. It happened to everyone and it varies with each other. But technically, don't make things too complicated. It's just that sometimes, you have to understand that the situation won't always favor you.
In other words, that's what gambling is all about - to win or to lose.
If you are having a bad losing streak on a particular session, take a break, that's it.