So you are very new to crypto trading bots. There is no risk if you know how to use it. Especially if you use your API key for bot trading you are safe. There is no chance to do a scam with you. You just need to give some permission when you are creating an API KEY. Dont give permission to withdraw asset.

However,
I will suggest you to check this article: [BIG LIST] Crypto Trading Bots]

From this post, you can able to learn about most of the crypto trading bots. Nowadays Kucoin is also supporting some trading bot so you don't need to use an API KEY fro trading bot. Right now they are offering 1) Grid trading bot, 2)Futures trading bot, 3) Smart rebalancing bot and 4) DCA bot. All of them are free to use and very easy to use also.

I am also using BitUniverse (BitUniverse Technology Meets Trading, Your auto cryptocurrency portfolio tracker & trading bot), This exchange is also free to use, You can also do Futures grid bot with Bituniverse by importing your API key from an exchange.

Hope this information will be helpful for you. If you need further information you can write here, will try to give answer ASAP