try not to believe in those completely mate because even experts in this field does not guarantee any of things that you are looking specially 80%-90% winrate? that is over expectation in tips (not believing in game fixing as well)
Call me a professional tipster because I can guarantee my prediction will have above 80% winrate, I will give a prediction to bet on favorite player or team where the odds is lower than 1.05, which mean it's huge favorite and almost impossible to lose.The @OP is asking to only have above 80% winrate, he don't mention about the odds matter
