Auto Trading Websites

hey there, I tried to start to invest in bitcoin with normal wallets, to trade by myself if I see the courses move.
sadly you have to pay so much to buy and sell bitcoin, that it's not really worth doing it.

I am looking for websites, that are doing auto trades. I've read a lot about them, but every website seems to be a scam or not real or you have to invest too much to start.
I don't want to invest a lot if I first want to see if something is trustable.

do you guys know auto trading websites that are secure? do you use something like that too?