I am sure that many physical casinos in small towns absolutely shamelessly rig their Slots to the lowest chance, which is not subject to any laws about what the chance should be on slot machines. They just put the lowest that there are.
Yes, I also believe that this Happens , Especially when I was a child I Saw slot machines everywhere, and very few played, but they did Play , but I never saw anyone win, that always caught my attention, however, currently that no longer exists, but at this point I also tell Myself that those machines would be 100% manipulated in favor of the owner, they were also small and well , it was obvious that it was not difficult to uncover them.
I remember those slots machines, they were very common here in our country back in gas station stores during the late 90s and the very early 2000s. I never saw anyone playing on them either, they almost seemed to be there on those stores for the sake of decoration only and not for the owner of the store to profit from people who wished to gamble.
Undoubtly small brick and mortar casinos or gambling huts in small towns when regulators rarely appear to audit them, those owners will definitely feel tempted to rig their machines sooner of later.
At least, thanks to online and provably fair casino games one does not need to be paranoid most of the time anyone.