Bit confused by this. Surely you know online slots are not compensated, therefore they are not affected by any previous play; either by you or by others.
The premise of other players' random results taking RTP away from your random results is not something I can really get my head around. Nor can a specific server act in favour, or against someone.
Unless I'm missing something blindingly obvious it just doesn't work this way.
And if you have even the slightest suspicion something like this is going on, I'd suggest you pack in your tinkering altogether and do something else.