Successful long-term options traders don't trade options 'directionally' (like buying 50K of GME calls), they manage a whole portfolio of options, and then take directional portfolio risk. This is sort of like diversifying, then running risk analysis, then figuring out where there is money to be made ie dummies who priced contracts incorrectly.
And, to run an option portfolio, professional options traders run risk management software like Blackrock Aladdin and Goldman Sachs SecDB. These cost a LOT of money (close to 6 digits a year)
Now, remember the zero sum part? No matter how smart you think you are, if you don't have these tools, you don't have the data or analysis that is available to the big boys. It's like playing poker with someone where they know the exact odds every second as cards appear, but you only have the vaguest idea.. Sure, you could get lucky once in a while but in the long run, not knowing the odds is going to hurt you and you are likely to lose all your money.