~snip~
Not really.
Something like these just from based every user though, while people think a new slot have a better RTP and provider often to give big win on new slot. However, these is just speculation there is no solid proof at all.
Example like, the more spin you are spent from previous spin are gonna to give you higher chance on next spin for getting a scatter/bonus.
I do believe different slot machines have different odds.
At least in the real world casinos that is the case, not sure if that also applies online.
In any case, these machines need to be certified and I'm sure they must publish their numbers somewhere, just that no one bothers to read that.