but if i want buy token ? It's like a game with 90% lose
If you mean a coin that's in Pre-Sale or ICO stage, you can wait for it to be listed on reputable exchange(s).
However, because the crypto space is still largely unregulated, it very easy to get scam, like you'r already aware.
So, the best advice anyone can give you it to take time and read up, learn about the market psychologies, how to research a project/coin, how to manage your exposure to risk/scam, stay updated with crypto related news,etc.
It's takes effort and time, but the education will pay far more than the time and effort invested in it in the longrun .