Play money is like playing craps. If you know the rules you might be able to come out on top sometimes, but there's no such thing as a professional craps player, just really lucky craps players.
If you play play money long enough and consider yourself good at it then you've taught yourself a LOT of bad practices. You probably think that if you go all-in people will either auto-fold or call with crap hoping to get lucky. You probably have a list of "Premium Hands" and sit around waiting for those hands and only those hands and praying they hold up. And when you catch a piece of the board you most likely shove or bet huge hoping to push people out of the hand.
If that sounds like you, you need to convert those skills to freeroll play first. Don't go straight to real money, play freerolls and get decent at those. Here's some tips that may help:
- Don't go all-in preflop. Yes, later in your career you will learn to go all-in under certain circumstances, but if you're used to play money you REALLY need to learn how to win without risking all your chips.
- When you hit those "Premium Hands" bet up to 3-5 BBs. No more than that preflop.
- When you hit the flop or after the flop, bet based on the size of the pot, 1/2 to 1x the size of the pot. If the pot is 1000 and you hit a good hand you want to bet 500-1000. If the pot is 25000 and you hit a good hand, you want to be 12500-25000.
Those are 3 basic things to convert play money skills to freeroll skills. They cover maybe 5-10% of the skills you need to develop before playing for real money. You need to read lots and watch lots of videos before you move up. But 90% of what you learned playing play money poker is not going to help you at the freeroll level, never mind the real money level.