What I did was start over Classic from beginning, during the first few fruit launches you should get a chance of 2 and 3 in a row, just be patient and wait for that perfect game! took me 30 minutes. Luck based so it could take you longer or shorter time than that.
If you continue past the start it gets hectic with bombs and multiple fruit and I never had any luck with that so I switched tactic: Restart the game or let 3 fruits fall. Wait for the same fruit x4. Let one or 2 fruits go down if its not the same one.