It's all purely coincidental. All slots have approximately the same RTP. In addition, in order to get statistics you need to get a wider sample (for example, 1M rounds). It is clear that the average gambler is unlikely to be able to afford it. If OP tomorrow will repeat the same experiment, his statistics will be quite different. Hence we can conclude that all these statistics have no value. Do not try to find a way to beat the casino as it does not exist and the results of the gambling session for the most part depend only on luck.