Do lucky streaks really exist?

There are times when I have a good streak, winning almost every hand I play and I get to have a huge stack, but after a moment I start to lose everything, I get bad hands and have even been killed AA or KK, and if I don't retire with the remaining chips I'll be left with zero, how should I act

Of course there are streaks, sometimes you hit big hands and win prizes (it depends on the buy-in), it depends on you and how long they last. When this happens to me, I stop playing for 3-4 days and then come back to playing.