Hello Tworie,
When we play we remember the win streaks and the loss streaks a lot more that we remember when the frequently vary.
For example, if we say 20 games went win, win, win, win, win, win, loss, win, loss, win, win, loss, loss, loss, loss, loss, win, loss, loss, win, in that order.
You are more likely to remember the 6 wins at the start and the 5 losses in the middle than you are the varying wins and losses between them.
This is because constantly winning (or loosing) again and again, has a more emotional impact on us making up feel good when constantly winning and bad when constantly loosing, where the varying games don't continue to increase that emotional impact.
As such you are less likely to remember the regular changes between wins and loss, therefore feeling like it is going between win and loss streaks without much variation in between.