Front Loader washing detergent - help

Every timew the washing gets done in our house, things come out dirty.
They loook like they're just wet, not clean.

We most ly use earths choice liquid, hve tried purity (worst by far) and amolin, but Im not really happy with any of them.

So Im thinking, obviulsy these companies are in businesss so their products must work for other people, maybe I need to be soaking the clothes before they get washed?

Is there something thats not nappysan etc (something that won't damage the clothes basically) that I can use to try to loosen some of the dirt and marks before the clothes go in to the wash?

do you do pre wash? are u selecting coloured or normal, we do long wash load settings for our heavy dirty stuff. are u over filling it? we use duo i think its called from big w in massive box for front loaders but use less than recomended for each wash.

its not overloaded.
we do most things on normal (cold), but if theres lots of colours I use the coloured wash.
sheets go on sheets wash, nappies on nappy wash (these seem to wash OK. Maybe I should do everything on nappy wash?)

I use eco-store with our front loader, my DH gets reactions to normal washing powders and everything comes up clean.

We were using 7th generation, earth's choice & aware but swapped back because we found they didn't clean as well.

It's a bit more expensive but I use less than recommended and it last us ages - I generally stock up on it when Woolies has it on special.