Welcome to FreeSteam Alex, Hope you plan on being a long term member.
The only way to play CS or CSS or any steam game is to play it cracked, Which means you can only play in CRacked Servers. If you want a legit CS/CSS steam account you'll have to pay for it, either from steam/store or from someone who has one for sale. If you want a legit account for free, you'll have to hack it (or rather phish it) yourself. For more info, use our handy dandy
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Now, I might have an account for sale, if you are interested.