As every online slot machine is computer-programmed, you can use software glitches to cheat your way into winning. This has been done for years by professional online casino scammers and can still be done nowadays.
Slots don't get hot or cold - Slot machines have something in common with goldfish: they have no memory. Every spin is independent of the previous and following spins. Every spin is considered a brand-new spin, with an outcome of any possible symbol combination.