Oh, I’m sure there is a technique that allows an experienced coin tosser to determine higher odds for a specific outcome.
Which is as much a rigged game as dealing from the bottom of the deck, loaded dice and having the magnet in the roulette wheel.
But unless the same person was tossing the same coin and both side picked the same side each time it would not do any good.
That is why I asked if that was the case.
If six different people tossed six different coins in six different locations and the side picking was random then the chance was 50/50.