And is there any other alternatives
I have 4k btc to invest
I don't get why those even are your only options, because If you have to ask you clearly don't understand how they work and what are the risks, and how they are not even comparable.
But in short: If you trust a trader enough to copy their trades you are taking a risk if the trader is good enough. They could have been just lucky in the past.
But what ever you do, don't invest in the bot. You will eventually lose with that.
OK then tell me another options