Hey Rose,
you are right, to use Trading portfolio Expert Advisors looks a bit scarier. This is because basically, the trading process is reversed.
With the regular Expert Advisors, we test many on Demo account and we place on live only the top performers.
With Trading Portfolio Expert Advisors we need to place on live all the EAs, and then remove the ones that are losing.
So give it more time on Demo, and you will see if this is your trading style.